Gaya APA
Advanced Selling Strategies. (2009).
Upper Saddle River, NJ:
.
Gaya Chicago
Advanced Selling Strategies.
Pertama.
Upper Saddle River, NJ:
,
2009.
Text.
Gaya MLA
Advanced Selling Strategies.
Pertama.
Upper Saddle River, NJ:
,
2009.
Text.
Gaya Turabian
Advanced Selling Strategies.
Upper Saddle River, NJ:
,
2009.
Print.