APA (7th ed.) Citation

Prochaska, J. O., & Norcross, J. C. (2003). Systems of psychotherapy: A transtheoretical analysis (5th ed.). Brooks/Cole Pub..

Chicago Style (17th ed.) Citation

Prochaska, James O., and John C. Norcross. Systems of Psychotherapy: A Transtheoretical Analysis. 5th ed. Pacific Grove, CA: Brooks/Cole Pub., 2003.

MLA (9th ed.) Citation

Prochaska, James O., and John C. Norcross. Systems of Psychotherapy: A Transtheoretical Analysis. 5th ed. Brooks/Cole Pub., 2003.