Zikmund, William G. Exploring marketing research / William G. Zikmund - 4th ed. - Chicago : Dryden Press, c1991. - xxiv,834 p. : ill. ; 26 cm. ISBN: 0030515629 LCCN: Subjects--Topical Terms: Marketing researchMarketing LC Class. No.: HF5415.2 / .Z54 1991