APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (9th ed.) Citation

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