Perry, J. A., & Perry, E. (1991). Contemporary society: An introduction to social science (6th ed.). Harper & Row.
Chicago Style (17. basım) AtıfPerry, John A., ve Erna Perry. Contemporary Society: An Introduction to Social Science. 6th ed. New York: Harper & Row, 1991.
MLA (8th ed.) AtıfPerry, John A., ve Erna Perry. Contemporary Society: An Introduction to Social Science. 6th ed. Harper & Row, 1991.
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