Cita APA (7a ed.)

Kent, P. (2012). Search engine optimization for dummies (5th ed.). Wiley Pub. Inc.

Cita Chicago Style (17a ed.)

Kent, Peter. Search Engine Optimization for Dummies. 5th ed. Hoboken, N.J.: Wiley Pub. Inc, 2012.

Cita MLA (9a ed.)

Kent, Peter. Search Engine Optimization for Dummies. 5th ed. Wiley Pub. Inc, 2012.