APA (7th ed.) Citation

Balter, D., & Butman, J. (2005). Grapevine: The new art of word-of-mouth marketing. Portfolio.

Chicago Style (17th ed.) Citation

Balter, Dave, and John Butman. Grapevine: The New Art of Word-of-mouth Marketing. New York: Portfolio, 2005.

MLA (9th ed.) Citation

Balter, Dave, and John Butman. Grapevine: The New Art of Word-of-mouth Marketing. Portfolio, 2005.