Tobing, D. H. (1987). An analysis of faculty development needs as perceived by administrations and lectures in selected private universities in Indonesia. The Catholic University of America.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Tobing, Darwin Halim. An Analysis of Faculty Development Needs as Perceived by Administrations and Lectures in Selected Private Universities in Indonesia. New York: The Catholic University of America, 1987.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Tobing, Darwin Halim. An Analysis of Faculty Development Needs as Perceived by Administrations and Lectures in Selected Private Universities in Indonesia. The Catholic University of America, 1987.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.