APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (8th ed.) Citation

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