Pride, W. M. (1987). Marketing: Basic concepts and decisions (5ª ed.). Houghton Mifflin.
Dyfyniad Arddull ChicagoPride, William M. Marketing: Basic Concepts and Decisions. 5ª ed. Houghton Mifflin, 1987.
Dyfyniad MLAPride, William M. Marketing: Basic Concepts and Decisions. 5ª ed. Houghton Mifflin, 1987.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.