Collier, J., & Elliott, J. L. (1919). Why community organization?: A statement of a need, and some suggestions for meeting it. National Social Unit Conference.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Collier, John, و John Lovejoy Elliott. Why Community Organization?: A Statement of a Need, and Some Suggestions for Meeting It. [Cincinnati]: National Social Unit Conference, 1919.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Collier, John, و John Lovejoy Elliott. Why Community Organization?: A Statement of a Need, and Some Suggestions for Meeting It. National Social Unit Conference, 1919.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.