Vee, J., Miller, T., & Bauer, J. (2008). Gravitational marketing: The science of attracting customers. John Wiley & Sons.
Cita Chicago (17th ed.)Vee, Jimmy, Travis Miller, i Joel Bauer. Gravitational Marketing: The Science of Attracting Customers. Hoboken, N.J.: John Wiley & Sons, 2008.
Cita MLA (8th ed.)Vee, Jimmy, et al. Gravitational Marketing: The Science of Attracting Customers. John Wiley & Sons, 2008.
Atenció: Aquestes cites poden no estar 100% correctes.