Zikmund, William G. Business research methods / William G. Zikmund. - 5th ed. - Fort Worth : Dryden, c1997. - xxi, 829 p. : ill. ; 24 cm. - The Dryden Press series in management. . Includes bibliographical references (p. 752-762) and index. ISBN: 0030184320 Subjects--Topical Terms: Management--Research.Business--Research.