Gaya APA
Relationship Selling. (2010).
New York:
[s.n.].
Gaya Chicago
Relationship Selling.
third.
New York:
[s.n.],
2010.
Text.
Gaya MLA
Relationship Selling.
third.
New York:
[s.n.],
2010.
Text.
Gaya Turabian
Relationship Selling.
New York:
[s.n.],
2010.
Print.