David K. Williams. (2013). The 7 Non-negotiables of winning: Tying Soft Traits to Hard Results. Canada: John Wiley & Sons, Inc.
Chicago Style citaatDavid K. Williams. The 7 Non-negotiables of Winning: Tying Soft Traits to Hard Results. Canada: John Wiley & Sons, Inc, 2013.
MLA citatieDavid K. Williams. The 7 Non-negotiables of Winning: Tying Soft Traits to Hard Results. Canada: John Wiley & Sons, Inc, 2013.
Let op: Deze citaties zijn niet altijd 100% accuraat.