Não informado. (2001). Special Publication. Geological Society of South Africa.
Lua i Stíl Chicago (17ú heag.)Não informado. Special Publication. Johannesburg, Africa do Sul: Geological Society of South Africa, 2001.
Lua MLA (8ú heag.)Não informado. Special Publication. Geological Society of South Africa, 2001.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.