Key Elements A. John Ward, Marvin Bower Journal of Marketing · Volume 31, Issue 2 (1967) · pp. 91 DOI: 10.2307/1249679 Abstract No abstract Article information Published1 April 1967 Languageen PublisherSAGE Publications LicenseNo license URL DOI10.2307/1249679 Journal ISSN0022-2429; 1547-7185