APA aipamena

Harnack, R. V., & Fest, T. B. (1964). Group discussion: Theory and technique. Appleton-Century-Crofts.

Chicago Style aipamena

Harnack, Robert Victor, and Thorrel B. Fest. Group Discussion: Theory and Technique. New York: Appleton-Century-Crofts, 1964.

MLA aipamena

Harnack, Robert Victor, and Thorrel B. Fest. Group Discussion: Theory and Technique. Appleton-Century-Crofts, 1964.