Citazione APA

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

Stile di citazione Chicago

Singleton, Royce A., e Bruce C. Straits. Approaches to Social Research. 4th ed. New York: Oxford University Press, 2005.

Citazione MLA

Singleton, Royce A., e Bruce C. Straits. Approaches to Social Research. 4th ed. Oxford University Press, 2005.