Jacobson, E. (1929). Progressive relaxation: A physiological and clinical investigation of muscular states and their significance in psychology and medical practice. The University of Chicago Press.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Jacobson, Edmund. Progressive Relaxation: A Physiological and Clinical Investigation of Muscular States and Their Significance in Psychology and Medical Practice. Chicago, Ill.: The University of Chicago Press, 1929.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Jacobson, Edmund. Progressive Relaxation: A Physiological and Clinical Investigation of Muscular States and Their Significance in Psychology and Medical Practice. The University of Chicago Press, 1929.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.