APA (7th ed.) Citation

Pirkle, E. C., & Yoho, W. H. (1985). Natural landscapes of the United States (4. ed.). Kendall/Hunt.

Chicago Style (17th ed.) Citation

Pirkle, E. C., and W. H. Yoho. Natural Landscapes of the United States. 4. ed. Dubuque, Iowa: Kendall/Hunt, 1985.

MLA (9th ed.) Citation

Pirkle, E. C., and W. H. Yoho. Natural Landscapes of the United States. 4. ed. Kendall/Hunt, 1985.