Gaya APA
Lewicki, Roy. J.. (2004).
Essentials of Negotiation .
Inggris:
Mc Graw Hill education.
Gaya Chicago
Lewicki, Roy. J..
Essentials of Negotiation.
Inggris:
Mc Graw Hill education,
2004.
Text.
Gaya MLA
Lewicki, Roy. J..
Essentials of Negotiation.
Inggris:
Mc Graw Hill education,
2004.
Text.
Gaya Turabian
Lewicki, Roy. J..
Essentials of Negotiation.
Inggris:
Mc Graw Hill education,
2004.
Print.