[@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}
}
,@article{596,
 author = {Lambiris, A.J.L.},
 journal = {Lammergeyer},
 pages = {1--210},
 title = {A review of the amphibians of Natal},
 volume = {39},
 year = {1989}
}
,@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{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}
}
,]