APA (7th ed.) Citation

Wybergh, W. J. (1925). The economic geology of Sabie and Pilgrims Rest.

Chicago Style (17th ed.) Citation

Wybergh, W. J. The Economic Geology of Sabie and Pilgrims Rest. Pretoria, 1925.

MLA (9th ed.) Citation

Wybergh, W. J. The Economic Geology of Sabie and Pilgrims Rest. 1925.