APA aipamena

 Vee, J. (2008).  Gravitational marketing: The science of attracting customers.  John Wiley & Sons.

Chicago Style aipamena

 Vee, Jimmy.  Gravitational Marketing: The Science of Attracting Customers.  John Wiley & Sons, 2008.

MLA aipamena

 Vee, Jimmy.  Gravitational Marketing: The Science of Attracting Customers.  John Wiley & Sons, 2008.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.