Gerson, R. F. (1991). Writing and implementing a marketing plan: A guide for small business owners. Crisp.
Chicago-referens (17:e uppl.)Gerson, Richard F. Writing and Implementing a Marketing Plan: A Guide for Small Business Owners. Los Altos, Calif.: Crisp, 1991.
MLA-referens (9:e uppl.)Gerson, Richard F. Writing and Implementing a Marketing Plan: A Guide for Small Business Owners. Crisp, 1991.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.