Cita APA (7th ed.)

Prochaska, J. O. (1984). Systems of psychotherapy: A transtheoretical analysis (2nd ed.). Dorsey Press.

Cita Chicago (17th ed.)

Prochaska, James O. Systems of Psychotherapy: A Transtheoretical Analysis. 2nd ed. Homewood, Ill: Dorsey Press, 1984.

Cita MLA (9th ed.)

Prochaska, James O. Systems of Psychotherapy: A Transtheoretical Analysis. 2nd ed. Dorsey Press, 1984.