Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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