Gaya APA
Cleland, D, I., King, W, R.
(1983).
SYSTEM ANALISYS AND PROJECT MANAGEMENT
.
Amerika:
Sams.
Gaya MLA
Cleland, David, I.., King, Willliam, R.
"SYSTEM ANALISYS AND PROJECT MANAGEMENT".
Amerika:
Sams,
1983.
Text.