Cita APA (7a ed.)

Davis, H., & Iwanow, D. (2009). Google advertising tools (2nd ed.). O'Reilly Media.

Cita Chicago Style (17a ed.)

Davis, Harold, y David Iwanow. Google Advertising Tools. 2nd ed. Sebastopol, CA: O'Reilly Media, 2009.

Cita MLA (8a ed.)

Davis, Harold, y David Iwanow. Google Advertising Tools. 2nd ed. O'Reilly Media, 2009.