APA (7th ed.) Zitazioa
Williams, D. K. (2013). The 7 non-negotiables of winning: Tying soft traits into hard results. Wiley.
Chicago Style (17th ed.) Zitazioa
Williams, David K. The 7 Non-negotiables of Winning: Tying Soft Traits into Hard Results. Hoboken, N.J.: Wiley, 2013.
MLA (9th ed.) Zitazioa
Williams, David K. The 7 Non-negotiables of Winning: Tying Soft Traits into Hard Results. Wiley, 2013.
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