Rubino, J. (2006). 15 secrets every network marketer must know: Essential elements and skills required to achieve 6- & 7-figure success in network marketing. John Wiley & Sons.
Παραπομπή Chicago StyleRubino, Joe. 15 Secrets Every Network Marketer Must Know: Essential Elements and Skills Required to Achieve 6- & 7-figure Success in Network Marketing. John Wiley & Sons, 2006.
Παραπομπή MLARubino, Joe. 15 Secrets Every Network Marketer Must Know: Essential Elements and Skills Required to Achieve 6- & 7-figure Success in Network Marketing. John Wiley & Sons, 2006.
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