Citazione Stile APA (7a Edizione)

Sommer, R., & Sommer, B. B. (1986). A practical guide to behavioral research: Tools and techniques (2nd ed.). Oxford University Press.

Citazione stile Chigago Style (17a edizione)

Sommer, Robert, e Barbara Baker Sommer. A Practical Guide to Behavioral Research: Tools and Techniques. 2nd ed. New York: Oxford University Press, 1986.

Citatione MLA (9a ed.)

Sommer, Robert, e Barbara Baker Sommer. A Practical Guide to Behavioral Research: Tools and Techniques. 2nd ed. Oxford University Press, 1986.