@book {1433,
	title = {Frogs and toads of the Natal Drakesberg},
	series = {Ukhahlamba},
	number = {Series No.3},
	year = {1988},
	publisher = {University of Natal Press},
	organization = {University of Natal Press},
	address = {Pietermaritzburg},
	author = {Lambiris, A. J. L.}
}
@article {1514,
	title = {Opportunistic seasonal breeding by frogs in Namaqualand},
	journal = {Journal of the Herpetological Association of Africa},
	year = {1988},
	pages = {19-24},
	author = {Channing, A.}
}
@article {1534,
	title = {Rana vertebralis: Species account. Pp. 121{\textendash}123 in Branch, W.R., ed. South African Red Data Book {\textendash} Reptiles and Amphibians.},
	year = {1988},
	publisher = {CSIR},
	address = {Pretoria},
	issn = {Report no. 151.}
}
@book {1413,
	title = {South African RedData Book- Reptiles and Amphibians},
	year = {1988},
	address = {Pretoria},
	author = {Branch, W.R.}
}
