APA استشهاد

National productivity council. (1961). Marketing and distribution in U.K. and U.S.A. and West Germany TR-8. N.P.C.

استشهاد بنمط شيكاغو

National productivity council. Marketing and Distribution in U.K. and U.S.A. and West Germany TR-8. New Delhi: N.P.C, 1961.

MLA استشهاد

National productivity council. Marketing and Distribution in U.K. and U.S.A. and West Germany TR-8. N.P.C, 1961.