APA (7th ed.) Citation

Zwinger, A., & Willard, B. E. (1972). Land above the trees: A guide to American alpine tundra ([1st ed.].). Harper & Row.

Chicago Style (17th ed.) Citation

Zwinger, Ann, and Beatrice E. Willard. Land Above the Trees: A Guide to American Alpine Tundra. [1st ed.]. New York: Harper & Row, 1972.

MLA (9th ed.) Citation

Zwinger, Ann, and Beatrice E. Willard. Land Above the Trees: A Guide to American Alpine Tundra. [1st ed.]. Harper & Row, 1972.