Gaya APA
Understanding and Using English Grammar. (2009).
New York:
Longman.
Gaya Chicago
Understanding and Using English Grammar.
Fourth Edition.
New York:
Longman,
2009.
Buku.
Gaya MLA
Understanding and Using English Grammar.
Fourth Edition.
New York:
Longman,
2009.
Buku.
Gaya Turabian
Understanding and Using English Grammar.
New York:
Longman,
2009.
Buku.