Swanepoel, J. H. (1970). The ontogenesis of the chondrocranium and of the nasal sac of the microhylid frog Breviceps adspersus pentheri Werner. Stellenbosch University.
Lua i Stíl Chicago (17ú heag.)Swanepoel, J. H. The Ontogenesis of the Chondrocranium and of the Nasal Sac of the Microhylid Frog Breviceps Adspersus Pentheri Werner. Stellenbosch: Stellenbosch University, 1970.
Lua MLA (8ú heag.)Swanepoel, J. H. The Ontogenesis of the Chondrocranium and of the Nasal Sac of the Microhylid Frog Breviceps Adspersus Pentheri Werner. Stellenbosch University, 1970.
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