APA (7th ed.) Zitazioa
Prochaska, J. o., & Norcross, J. C. (1994). Systems of psychotherapy: A transtheoretical analysis (3rd ed.). Brooks/Cole.
Chicago Style (17th ed.) Zitazioa
Prochaska, James o., eta John C. Norcross. Systems of Psychotherapy: A Transtheoretical Analysis. 3rd ed. California: Brooks/Cole, 1994.
MLA (9th ed.) Zitazioa
Prochaska, James o., eta John C. Norcross. Systems of Psychotherapy: A Transtheoretical Analysis. 3rd ed. Brooks/Cole, 1994.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.