Gaya APA
ABC's Of Relationship Selling Through Service. (2007).
New York:
[s.n.].
Gaya Chicago
ABC's Of Relationship Selling Through Service.
.
New York:
[s.n.],
2007.
Text.
Gaya MLA
ABC's Of Relationship Selling Through Service.
.
New York:
[s.n.],
2007.
Text.
Gaya Turabian
ABC's Of Relationship Selling Through Service.
New York:
[s.n.],
2007.
Print.