BANGS DAVID H. (1989). BUSINESS PLANNING GUIDE: CREATING A PLAN FOR SUCCESS IN YOUR OWN BUSINESS (5th.). UPSTART PUBLISHING.
Chicago-referens (17:e uppl.)BANGS DAVID H. BUSINESS PLANNING GUIDE: CREATING A PLAN FOR SUCCESS IN YOUR OWN BUSINESS. 5th. DOVER: UPSTART PUBLISHING, 1989.
MLA-referens (9:e uppl.)BANGS DAVID H. BUSINESS PLANNING GUIDE: CREATING A PLAN FOR SUCCESS IN YOUR OWN BUSINESS. 5th. UPSTART PUBLISHING, 1989.
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