Cita APA (7a ed.)
Sommer, R., & Sommer, B. (2002). A Practical Guide to Behavioral Research. Tools and Techniques. Oxford University Press.
Cita Chicago Style (17a ed.)
Sommer, Robert, y Barbara Sommer. A Practical Guide to Behavioral Research. Tools and Techniques. New York: Oxford University Press, 2002.
Cita MLA (9a ed.)
Sommer, Robert, y Barbara Sommer. A Practical Guide to Behavioral Research. Tools and Techniques. Oxford University Press, 2002.
Precaución: Estas citas no son 100% exactas.