Cita APA (7a ed.)

Stokes, R. (2014). Ultimate guide to pay-per-click advertising (2nd ed.). Entrepreneur Press.

Cita Chicago Style (17a ed.)

Stokes, Richard. Ultimate Guide to Pay-per-click Advertising. 2nd ed. Irvine: Entrepreneur Press, 2014.

Cita MLA (9a ed.)

Stokes, Richard. Ultimate Guide to Pay-per-click Advertising. 2nd ed. Entrepreneur Press, 2014.