APA aipamena

(2011). Making money with internet marketing. George Peirson.

Chicago Style aipamena

Making Money with Internet Marketing. [Winnetka, CA]: George Peirson, 2011.

MLA aipamena

Making Money with Internet Marketing. George Peirson, 2011.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.