Martin Sundel & Sandra S. Sundel. (2018). Behavior change in the human services: Behavioral and cognitive principles and applications (Sixth edition.). Sage Publications.
استشهاد بنمط شيكاغوMartin Sundel و Sandra S. Sundel. Behavior Change in the Human Services: Behavioral and Cognitive Principles and Applications. Sixth edition. London: Sage Publications, 2018.
MLA استشهادMartin Sundel و Sandra S. Sundel. Behavior Change in the Human Services: Behavioral and Cognitive Principles and Applications. Sixth edition. Sage Publications, 2018.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.