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 title = {Amphibians of Central and Southern Africa},
 year = {2001}
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,@book{596,
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,@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,
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 year = {1989}
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,@electronic{596,
 address = {http://www.iucnredlist.org},
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,@book{1301,
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 title = {Frogs of South Africa, 2nd edition},
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,@article{3070,
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 title = {An annotated checklist of the frogs of Namibia},
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 year = {1993}
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,@article{54636,
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 volume = {6},
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,@article{55279,
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 volume = {26},
 year = {1985}
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,@article{57712,
 author = {Poynton, J.C.},
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 pages = {67--74},
 title = {On species pairs among southern African amphibians},
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,@article{57712,
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 journal = {Madoqua},
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 pages = {37--44},
 title = {The advertisement call and other aspects of the reproductive biology of Breviceps adspersus Peter (Anura, Microhylidae)},
 year = {1995}
}
,@article{57712,
 author = {Milstein, P.S.},
 journal = {African Wildlife},
 number = {21},
 pages = {167--168},
 title = {Hibernation of the rain-frog Breviceps adspersus},
 year = {1967}
}
,@article{57712,
 author = {Engelbrecht, G.D. and Mulder, P.F.S.},
 journal = {African Zoology},
 number = {35},
 pages = {217--221},
 title = {A biochemical genetic comparison of four populations of Breviceps adspersus (Anura: Microhylidae)},
 year = {2000}
}
,]