Gaya APA
American Universities and Colleges. (2008).
America:
Praeger Publishers.
Gaya Chicago
American Universities and Colleges.
Eighteenth Edition.
America:
Praeger Publishers,
2008.
MPK.
Gaya MLA
American Universities and Colleges.
Eighteenth Edition.
America:
Praeger Publishers,
2008.
MPK.
Gaya Turabian
American Universities and Colleges.
America:
Praeger Publishers,
2008.
MPK.