Cita APA (7a ed.)

Ross, E. A. (1938). Principles of sociology (3rd ed.). Appleton.

Cita Chicago Style (17a ed.)

Ross, Edward Alsworth. Principles of Sociology. 3rd ed. N.Y.: Appleton, 1938.

Cita MLA (8a ed.)

Ross, Edward Alsworth. Principles of Sociology. 3rd ed. Appleton, 1938.