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.
ציטוט MLAVee, Jimmy. Gravitational Marketing: The Science of Attracting Customers. John Wiley & Sons, 2008.
אזהרה: ציטוטים אלה לעיתים לא מדויקים ב 100%.