APA (7th ed.) Citation

Sprague, M. (1964). The great gates: The story of the Rocky Mountain passes ([1st ed.].). Little, Brown.

Chicago Style (17th ed.) Citation

Sprague, Marshall. The Great Gates: The Story of the Rocky Mountain Passes. [1st ed.]. Boston: Little, Brown, 1964.

MLA (8th ed.) Citation

Sprague, Marshall. The Great Gates: The Story of the Rocky Mountain Passes. [1st ed.]. Little, Brown, 1964.

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