Geological Society of South Africa\nGeologiese Vereniging van Suid-Afrika. (1987). South African Journal of Geology. Bureau for Scientific Publications.
Lua i Stíl Chicago (17ú heag.)Geological Society of South Africa\nGeologiese Vereniging van Suid-Afrika. South African Journal of Geology. Petroria, Africa do Sul: Bureau for Scientific Publications, 1987.
Lua MLA (8ú heag.)Geological Society of South Africa\nGeologiese Vereniging van Suid-Afrika. South African Journal of Geology. Bureau for Scientific Publications, 1987.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.