Cita APA (7th ed.)

(1938). Principles of sociology (3rd ed.). D. Appleton-Century.

Cita Chicago (17th ed.)

Principles of Sociology. 3rd ed. New York: D. Appleton-Century, 1938.

Cita MLA (9th ed.)

Principles of Sociology. 3rd ed. D. Appleton-Century, 1938.