Gaya APA
Gray, C, F., W., L, E.
(2006).
PROJECT MANAGEMENT
(
THIRD ED.)
.
New York:
Mc. Graw Hill.
Gaya MLA
Gray, Clifford, F.., W., Larson., Erik.
"PROJECT MANAGEMENT".
THIRD ED.
New York:
Mc. Graw Hill,
2006.
Text.