Cita APA (7th ed.)

Prochaska, J. O., & Norcross, J. C. (2010). Systems of psychotherapy: A transtheoretical analysis (7th, international ed.). Brooks/Cole Cengage Learning.

Cita Chicago (17th ed.)

Prochaska, James O., i John C. Norcross. Systems of Psychotherapy: A Transtheoretical Analysis. 7th, international ed. Australia: Brooks/Cole Cengage Learning, 2010.

Cita MLA (9th ed.)

Prochaska, James O., i John C. Norcross. Systems of Psychotherapy: A Transtheoretical Analysis. 7th, international ed. Brooks/Cole Cengage Learning, 2010.