Cita APA (7a ed.)

Prochaska, J. O., & Velicer, W. F. (1997). The transtheoretical model of health behavior change. [s.n.].

Cita Chicago Style (17a ed.)

Prochaska, James O., y Wayne F. Velicer. The Transtheoretical Model of Health Behavior Change. [S.l.]: [s.n.], 1997.

Cita MLA (9a ed.)

Prochaska, James O., y Wayne F. Velicer. The Transtheoretical Model of Health Behavior Change. [s.n.], 1997.