APA (7th ed.) Citation

Hart, H. M. (1965). Old forts of the Far West. Bonanza Books.

Chicago Style (17th ed.) Citation

Hart, Herbert M. Old Forts of the Far West. New York: Bonanza Books, 1965.

MLA (9th ed.) Citation

Hart, Herbert M. Old Forts of the Far West. Bonanza Books, 1965.