APA (7th ed.) Citation

Landis, P. H. (1949). Man in environment, an introduction to sociology. Crowell.

Chicago Style (17th ed.) Citation

Landis, Paul Henry. Man in Environment, an Introduction to Sociology. New York: Crowell, 1949.

MLA (9th ed.) Citation

Landis, Paul Henry. Man in Environment, an Introduction to Sociology. Crowell, 1949.