APA (7th ed.) Citation

Hawley, A. H. (1950). Human ecology: A theory of community structure. Ronald Press.

Chicago Style (17th ed.) Citation

Hawley, Amos Henry. Human Ecology: A Theory of Community Structure. New York: Ronald Press, 1950.

MLA (9th ed.) Citation

Hawley, Amos Henry. Human Ecology: A Theory of Community Structure. Ronald Press, 1950.