[@book{596,
 address = {Ithaca and London},
 author = {Channing, A.},
 publisher = {Cornell University Press},
 title = {Amphibians of Central and Southern Africa},
 year = {2001}
}
,@book{596,
 address = {Washington, D.C.},
 author = {Minter, L.R., Burger, M., Harrison, J.A., Braack, H.H., Bishop, P.J. and Knoepfer, D.},
 publisher = {SI/MAB Series No. 9},
 title = {Atlas and Red Data Book of the Frogs of South Africa, Lesotho and Swaziland},
 year = {2004}
}
,@book{596,
 address = {Johannesburg},
 author = {Passmore, N.I. and Carruthers, V.C.},
 publisher = {Southern Book Publishers and Witwatersrand University Press},
 title = {South African Frogs, 2nd Edition},
 year = {1995}
}
,@phdthesis{596,
 author = {Jacobsen, N.H.G.},
 school = {Unpublished PhD thesis, University of Natal, Durban},
 title = {A Herpetological Survey of the Transvaal},
 year = {1990}
}
,@electronic{596,
 address = {http://www.iucnredlist.org},
 author = {IUCN},
 title = {IUCN Red List of Threatened Species (ver. 2013.2)},
 year = {2013}
}
,@electronic{596,
 address = {http://research.amnh.org/herpetology/amphibia/index.html},
 author = {Frost, D.R.},
 publisher = {American Museum of Natural History},
 title = {Amphibian Species of the World: an Online Reference. Version 5.6 (9 January 2013). Electronic Database},
 year = {2013}
}
,@book{1301,
 address = {Craighall},
 author = {Wager, V.A.},
 publisher = {Delta Books},
 title = {Frogs of South Africa, 2nd edition},
 year = {1986}
}
,@article{3070,
 author = {Channing, A. and Griffin, M.},
 journal = {Madoqua},
 pages = {101--116},
 title = {An annotated checklist of the frogs of Namibia},
 volume = {18},
 year = {1993}
}
,@inbook{3176,
 address = {Austin, Texas},
 author = {},
 booktitle = {African <i>Bufo</i>},
 editor = {Tandy, M. and Keith, R.},
 pages = {119--170},
 publisher = {University of Texas Press},
 title = {Evolution in the Genus <i>Bufo</i>},
 year = {1972}
}
,@article{11700,
 author = {Poynton, J.C.},
 journal = {Annals of the Natal Museum},
 pages = {1--334},
 title = {The amphibia of southern Africa: a faunal study},
 volume = {17},
 year = {1964}
}
,@article{54636,
 author = {Broadley, D.G.},
 journal = {Puku},
 pages = {1--143},
 title = {The reptiles and amphibians of Zambia},
 volume = {6},
 year = {1971}
}
,@article{54636,
 author = {Poynton, J.C. and Broadley, D.G.},
 journal = {Annals of the Natal Museum},
 pages = {447--490},
 title = {Amphibia Zambesiaca. 4. Bufonidae},
 volume = {29},
 year = {1988}
}
,@book{54649,
 address = {Frankfurt am Main},
 author = {Channing, A. and Howell, K.M.},
 publisher = {Edition Chimaira},
 title = {Amphibians of East Africa},
 year = {2006}
}
,@article{54649,
 author = {Poynton, J.C.},
 journal = {Senckenbergiana Biologica},
 pages = {193--225},
 title = {Amphibia of the Nyasa-Luangwa region of Africa},
 volume = {45},
 year = {1964}
}
,@book{54659,
 address = {Albany},
 author = {Stewart, M.M.},
 publisher = {State University of New York Press},
 title = {Amphibians of Malawi},
 year = {1967}
}
,@book{54659,
 author = {Harper, E. and Vonesh, J.R.},
 publisher = {http://www.zoo.ufl.edu/voneshjr/Harper%20&%20Vonesh%20-%20Amphibian%20Guide.pdf},
 title = {Field Guide to the Amphibians of the East Usambara Mountains. Preliminary Draft},
 year = {2003}
}
,@article{54659,
 author = {Stevens, R.A.},
 journal = {Arnoldia Rhodesia},
 pages = {1--22},
 title = {An annotated checklist of the amphibians and reptiles known to occur in south-eastern Malawi},
 volume = {6},
 year = {1974}
}
,@article{54659,
 author = {Poynton, J.C.},
 journal = {Systematics and Biodiversity},
 pages = {117--126},
 title = {Altitudinal species turnover in southern Tanzania shown by anurans: some zoogeographical considerations},
 volume = {1},
 year = {2003}
}
,@article{54659,
 author = {Channing, A., Sinclair, A.R.E., Mduma, S.A.R., Moyer, D. and Kreulen, D.A.},
 journal = {African Journal of Herpetology},
 number = {2},
 pages = {163--181},
 title = {Serengeti amphibians: Distribution and Monitoring baseline},
 volume = {53},
 year = {2004}
}
,@article{54659,
 author = {Ruas, C.},
 journal = {Garcia de Orta. Ser. Zool. (Lisboa)},
 pages = {19--41},
 title = {Contribuicao para o conhecimento da fauna de batraquios de Angola},
 volume = {21},
 year = {1996}
}
,@article{54885,
 author = {Tandy, M. and Tandy, J.},
 journal = {Zoologica Africana},
 number = {11},
 pages = {349--368},
 title = {Evolution of acoustic behaviour in African Bufo},
 year = {1976}
}
,@article{54885,
 author = {Balinsky, B.I.},
 journal = {Zoologica Africana},
 number = {4},
 pages = {37--93},
 title = {The reproductive ecology of amphibians of the Transvaal highveld},
 year = {1969}
}
,]