Παραπομπή APA

Singleton, R. A., & Straits , B. C. (2005). Approaches to social research (4th ed.). OUP.

Παραπομπή Chicago Style

Singleton, Royce A., και Bruce C. Straits. Approaches to Social Research. 4th ed. New York: OUP, 2005.

Παραπομπή MLA

Singleton, Royce A., και Bruce C. Straits. Approaches to Social Research. 4th ed. OUP, 2005.