Gaya APA
Wittkopf, C, W, E, R.
(2001).
The Global Agenda : Issues and Prespective
(
6)
.
Jakarta:
McGraw-Hill.
Gaya MLA
Wittkopf, Charles, W.Kegley,, Eugene, R..
"The Global Agenda : Issues and Prespective".
6
Jakarta:
McGraw-Hill,
2001.
Text.