Gaya APA
Schiffman, Stephan. (2010).
Negotiation Techniques ( That Really Work!) .
Avon:
Business.
Gaya Chicago
Schiffman, Stephan.
Negotiation Techniques ( That Really Work!).
Avon:
Business,
2010.
Text.
Gaya MLA
Schiffman, Stephan.
Negotiation Techniques ( That Really Work!).
Avon:
Business,
2010.
Text.
Gaya Turabian
Schiffman, Stephan.
Negotiation Techniques ( That Really Work!).
Avon:
Business,
2010.
Print.