APA (7th ed.) Citation

Tapscott Don & Williams, A. D. (2006). Wikinomics: How mass collaboration changes everything. Portfolio.

Chicago Style (17th ed.) Citation

Tapscott Don and Anthony D. Williams. Wikinomics: How Mass Collaboration Changes Everything. New York: Portfolio, 2006.

MLA (9th ed.) Citation

Tapscott Don and Anthony D. Williams. Wikinomics: How Mass Collaboration Changes Everything. Portfolio, 2006.