Gaya APA
Writing Academic English. (2006).
New York:
Pearson Education Longman.
Gaya Chicago
Writing Academic English.
Ed. 4.
New York:
Pearson Education Longman,
2006.
Textbook.
Gaya MLA
Writing Academic English.
Ed. 4.
New York:
Pearson Education Longman,
2006.
Textbook.
Gaya Turabian
Writing Academic English.
New York:
Pearson Education Longman,
2006.
Textbook.