Cita APA (7a ed.)

Perry, J. A., & Perry, E. (1991). Contemporary society: An introduction to social science (6th ed.). Harper & Row.

Cita Chicago Style (17a ed.)

Perry, John A., y Erna Perry. Contemporary Society: An Introduction to Social Science. 6th ed. New York: Harper & Row, 1991.

Cita MLA (8a ed.)

Perry, John A., y Erna Perry. Contemporary Society: An Introduction to Social Science. 6th ed. Harper & Row, 1991.