APA (7th ed.) Citation

Hoffman, A. D., & Hoffman, I. D. (1947). Free gold: The story of Canadian mining. Rinehart & co., inc.

Chicago Style (17th ed.) Citation

Hoffman, Arnold David, and Irwin D. Hoffman. Free Gold: The Story of Canadian Mining. New York, Toronto: Rinehart & co., inc, 1947.

MLA (9th ed.) Citation

Hoffman, Arnold David, and Irwin D. Hoffman. Free Gold: The Story of Canadian Mining. Rinehart & co., inc, 1947.