Cita APA (7a ed.)

Bernstein, D. A., Borkovec, T. D., & Ullmann, L. P. (1979). Progressive relaxation training: : a manual for the helping professions. Research Press.

Cita Chicago Style (17a ed.)

Bernstein, Douglas A., Thomas D. Borkovec, y Leonard P. Ullmann. Progressive Relaxation Training: : A Manual for the Helping Professions. Champaign, Illinois: Research Press, 1979.

Cita MLA (9a ed.)

Bernstein, Douglas A., et al. Progressive Relaxation Training: : A Manual for the Helping Professions. Research Press, 1979.