R. M. Hill, R. S. Alexender, . (2005). Industrial Marketing. Delhi: A.I.T.B.S Pub.
R. M. Hill, R. S. Alexender, . 2005. Industrial Marketing. Delhi: A.I.T.B.S Pub.
R. M. Hill, R. S. Alexender, . Industrial Marketing. Delhi: A.I.T.B.S Pub. 2005.