APA (7th ed.) Citation

Martini, J. E. J., & Vorster, C. J. (1994). The metallogeny of the Pretoria area. Geological Survey of South Africa.

Chicago Style (17th ed.) Citation

Martini, J. E. J., and C. J. Vorster. The Metallogeny of the Pretoria Area. Pretoria: Geological Survey of South Africa, 1994.

MLA (8th ed.) Citation

Martini, J. E. J., and C. J. Vorster. The Metallogeny of the Pretoria Area. Geological Survey of South Africa, 1994.