MLA

Schachter, Stanley. The Psychology of Affiliation : Experimental Studies of the Sources of Gregariousness. London: Tavistock, 1961.

APA

Schachter, S. (1961). The psychology of affiliation : experimental studies of the sources of gregariousness. London: Tavistock.

Chicago

Schachter, Stanley, The Psychology of Affiliation: Experimental Studies of the Sources of Gregariousness. London: Tavistock, 1961.