Gaya APA
LEWICKI, R, J.
(2003).
Negotiation
(
4th.ed.)
.
BOSTON:
MCGRAW HILL-IRWIN.
Gaya MLA
LEWICKI, ROY, J..
"Negotiation".
4th.ed.
BOSTON:
MCGRAW HILL-IRWIN,
2003.
Text.