Gaya APA
Langan, John. (2015).
English skills with readings (9th ed.).
New York:
McGraw Hill Education.
Gaya Chicago
Langan, John.
English skills with readings.
9th ed.
New York:
McGraw Hill Education,
2015.
Text.
Gaya MLA
Langan, John.
English skills with readings.
9th ed.
New York:
McGraw Hill Education,
2015.
Text.
Gaya Turabian
Langan, John.
English skills with readings.
9th ed.
New York:
McGraw Hill Education,
2015.
Print.