Gaya APA
OXFORD learner's. (2008).
New York:
Oxford University.
Gaya Chicago
OXFORD learner's.
Ed. 4.
New York:
Oxford University,
2008.
Text.
Gaya MLA
OXFORD learner's.
Ed. 4.
New York:
Oxford University,
2008.
Text.
Gaya Turabian
OXFORD learner's.
New York:
Oxford University,
2008.
Print.