Pirow, H. (1935). Gold mining in South Africa: An address. Witwatersrand University Press.
Lua i Stíl Chicago (17ú heag.)Pirow, Hans. Gold Mining in South Africa: An Address. [Johannesburg]: Witwatersrand University Press, 1935.
Lua MLA (8ú heag.)Pirow, Hans. Gold Mining in South Africa: An Address. Witwatersrand University Press, 1935.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.