APA (7th ed.) Citation

Sommer, R., & Sommer, B. B. (1986). A practical guide to behavioral research: Tools and techniques (2. ed., 1. print.). Oxford Univ. Press.

Chicago Style (17th ed.) Citation

Sommer, Robert, and Barbara B. Sommer. A Practical Guide to Behavioral Research: Tools and Techniques. 2. ed., 1. print. New York u.a: Oxford Univ. Press, 1986.

MLA (9th ed.) Citation

Sommer, Robert, and Barbara B. Sommer. A Practical Guide to Behavioral Research: Tools and Techniques. 2. ed., 1. print. Oxford Univ. Press, 1986.