Dyfyniad APA

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

Dyfyniad Arddull Chicago

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

Dyfyniad MLA

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

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.