Cita APA (7a ed.)

Van Zyl, D. (1967). The geology of the O'okiep Copper Mine, Namaqualand. [University of Stellenbosch].

Cita Chicago Style (17a ed.)

Van Zyl, D. The Geology of the O'okiep Copper Mine, Namaqualand. Stellenbosch: [University of Stellenbosch], 1967.

Cita MLA (8a ed.)

Van Zyl, D. The Geology of the O'okiep Copper Mine, Namaqualand. [University of Stellenbosch], 1967.