Citazione Stile APA (7a Edizione)

Ryan, T. A. (1970). Intentional behavior: An approach to human motivation. Ronald Press.

Citazione stile Chigago Style (17a edizione)

Ryan, Thomas A. Intentional Behavior: An Approach to Human Motivation. New York: Ronald Press, 1970.

Citatione MLA (9a ed.)

Ryan, Thomas A. Intentional Behavior: An Approach to Human Motivation. Ronald Press, 1970.