APA (7th ed.) Citation

Gumpert, D. E. (1996). How to really create a successful marketing plan (3. rev. and exp. ed.). Inc. Magazine.

Chicago Style (17th ed.) Citation

Gumpert, David E. How to Really Create a Successful Marketing Plan. 3. rev. and exp. ed. Boston: Inc. Magazine, 1996.

MLA (9th ed.) Citation

Gumpert, David E. How to Really Create a Successful Marketing Plan. 3. rev. and exp. ed. Inc. Magazine, 1996.