APA (7th ed.) Citation

Smith, W. A. (1971). The diamond hunters. Pen Books.

Chicago Style (17th ed.) Citation

Smith, Wilbur A. The Diamond Hunters. London: Pen Books, 1971.

MLA (9th ed.) Citation

Smith, Wilbur A. The Diamond Hunters. Pen Books, 1971.

Warning: These citations may not always be 100% accurate.