Agarwal, S. K., & Ansari, M. M. (1991). Directory of distance education institutions.
シカゴスタイル引用形Agarwal, S K., , M M. Ansari. Directory of Distance Education Institutions. New Delhi, Association of Indian Universities, 1991.
MLA引用形式Agarwal, S K., , M M. Ansari. Directory of Distance Education Institutions. 1991.
警告: この引用は必ずしも正確ではありません.