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