Hayden, C. J. (2007). Get clients now!: A 28-day marketing program for professionals, consultants, and coaches (2nd ed.). American Management Association.
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Chicago Style (17th ed.) Zitazioa
Hayden, C. J. Get Clients Now!: A 28-day Marketing Program for Professionals, Consultants, and Coaches. 2nd ed. New York: American Management Association, 2007.
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MLA (9th ed.) Zitazioa
Hayden, C. J. Get Clients Now!: A 28-day Marketing Program for Professionals, Consultants, and Coaches. 2nd ed. American Management Association, 2007.
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