APA

Zimbardo P. G., Leippe M. R., . (1991). The psychology of attitude change and social influence. New York: McGraw-Hill.

Chicago

Zimbardo Philip G, Leippe Michael R, . 1991. The psychology of attitude change and social influence. New York: McGraw-Hill.

Harvard

Zimbardo P. G., Leippe M. R., . (1991). The psychology of attitude change and social influence. New York: McGraw-Hill.

MLA

Zimbardo Philip G, Leippe Michael R, . The psychology of attitude change and social influence. New York: McGraw-Hill. 1991.