(1990). The modern contest: A systemic guide to the pattern that connects individual psychotherapy, family therapy, group work, teaching, organizational life, and large scale social problems / James P. Gustafson and Lowell W. Cooper.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)The Modern Contest: A Systemic Guide to the Pattern That Connects Individual Psychotherapy, Family Therapy, Group Work, Teaching, Organizational Life, and Large Scale Social Problems / James P. Gustafson and Lowell W. Cooper. 1990.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)The Modern Contest: A Systemic Guide to the Pattern That Connects Individual Psychotherapy, Family Therapy, Group Work, Teaching, Organizational Life, and Large Scale Social Problems / James P. Gustafson and Lowell W. Cooper. 1990.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.