Cita APA (7th ed.)

THEODORSON, G. A. (1961). Studies in human ecology. Harper & Row.

Cita Chicago (17th ed.)

THEODORSON, George A. Studies in Human Ecology. New York: Harper & Row, 1961.

Cita MLA (9th ed.)

THEODORSON, George A. Studies in Human Ecology. Harper & Row, 1961.