Gaya APA
Jr., K, W., R., W. (2004).
World Politics Trend and Transformation 9th edition .
USA:
Thomson Wadsworth.
Gaya MLA
Jr., Kegley,Charles, W.., R., Wittkopf,Eugene.
"World Politics Trend and Transformation 9th edition".
USA:
Thomson Wadsworth,
2004.
Text.