Chang, J. L. (1980). Teaching methods in social work education: Focus on social work methods courses [microform]. Photoduplication Service. University of the Philippines Library.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Chang, John Lun-Hsun. Teaching Methods in Social Work Education: Focus on Social Work Methods Courses [microform]. Quezon City: Photoduplication Service. University of the Philippines Library, 1980.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Chang, John Lun-Hsun. Teaching Methods in Social Work Education: Focus on Social Work Methods Courses [microform]. Photoduplication Service. University of the Philippines Library, 1980.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.