Dyfyniad APA
Washton, A. M., & Zweben, J. E. (2006). Treating alcohol and drug problems in psychotherapy practice: Doing what works. Guilford Press.
Dyfyniad Arddull Chicago
Washton, Arnold M., and Joan E. Zweben. Treating Alcohol and Drug Problems in Psychotherapy Practice: Doing What Works. New York: Guilford Press, 2006.
Dyfyniad MLA
Washton, Arnold M., and Joan E. Zweben. Treating Alcohol and Drug Problems in Psychotherapy Practice: Doing What Works. Guilford Press, 2006.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.