APA (7th ed.) Citation

Robinson, D. (1956). Trees and forests of Glacier National Park (Revised 1956.). Glacier Natural History Association.

Chicago Style (17th ed.) Citation

Robinson, Don. Trees and Forests of Glacier National Park. Revised 1956. [West Glacier, Montana]: Glacier Natural History Association, 1956.

MLA (9th ed.) Citation

Robinson, Don. Trees and Forests of Glacier National Park. Revised 1956. Glacier Natural History Association, 1956.