Gaya APA
Langan, John. (2012).
English skills with readings (8th Ed.).
New York:
McGraw-Hill.
Gaya Chicago
Langan, John.
English skills with readings.
8th Ed.
New York:
McGraw-Hill,
2012.
Text.
Gaya MLA
Langan, John.
English skills with readings.
8th Ed.
New York:
McGraw-Hill,
2012.
Text.
Gaya Turabian
Langan, John.
English skills with readings.
8th Ed.
New York:
McGraw-Hill,
2012.
Print.