APA

Keltner J. W., . (1957). Group discussion processes. New York: Longmasn, Green and Co.

Chicago

Keltner John W, . 1957. Group discussion processes. New York: Longmasn, Green and Co.

Harvard

Keltner J. W., . (1957). Group discussion processes. New York: Longmasn, Green and Co.

MLA

Keltner John W, . Group discussion processes. New York: Longmasn, Green and Co. 1957.