Gaya APA
K.Williams, D. (2013).
The 7 Non - Negotiables of Winning : Tying Soft Traits to Hard Results .
Amerika:
Wiley.
Gaya MLA
K.Williams, David.
"The 7 Non - Negotiables of Winning : Tying Soft Traits to Hard Results".
Amerika:
Wiley,
2013.
Text.