Vee, J. (2008). Gravitational marketing: The science of attracting customers. John Wiley & Sons.
Trích dẫn kiểu ChicagoVee, Jimmy. Gravitational Marketing: The Science of Attracting Customers. John Wiley & Sons, 2008.
MLA citiranjeVee, Jimmy. Gravitational Marketing: The Science of Attracting Customers. John Wiley & Sons, 2008.
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