APA (7th ed.) Citation

Ruhle, G. C. (1972). Roads and trails of Waterton-Glacier National Parks: The Ruhle handbook. J.W. Forney.

Chicago Style (17th ed.) Citation

Ruhle, George Cornelius. Roads and Trails of Waterton-Glacier National Parks: The Ruhle Handbook. Minneapolis: J.W. Forney, 1972.

MLA (9th ed.) Citation

Ruhle, George Cornelius. Roads and Trails of Waterton-Glacier National Parks: The Ruhle Handbook. J.W. Forney, 1972.