Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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