APA (7th ed.) Citation

Donn, W. L. (1972). The earth: Our physical environment. John Wiley & Sons.

Chicago Style (17th ed.) Citation

Donn, William L. The Earth: Our Physical Environment. New York: John Wiley & Sons, 1972.

MLA (9th ed.) Citation

Donn, William L. The Earth: Our Physical Environment. John Wiley & Sons, 1972.