Dyfyniad APA

 Williams, D. K. (2013).  The 7 non-negotiables of winning: Tying soft traits to hard results.  Wiley.

Dyfyniad Arddull Chicago

 Williams, David K.  The 7 Non-negotiables of Winning: Tying Soft Traits to Hard Results.  Wiley, 2013.

Dyfyniad MLA

 Williams, David K.  The 7 Non-negotiables of Winning: Tying Soft Traits to Hard Results.  Wiley, 2013.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.