APA (7th ed.) Citation

Greenbie, S. (1929). Frontiers and the fur trade. The John Day Company.

Chicago Style (17th ed.) Citation

Greenbie, Sydney. Frontiers and the Fur Trade. New York: The John Day Company, 1929.

MLA (8th ed.) Citation

Greenbie, Sydney. Frontiers and the Fur Trade. The John Day Company, 1929.

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