Gaya APA
Grammar Essentials. (2006).
New York:
Learning Express.
Gaya Chicago
Grammar Essentials.
3rd ed..
New York:
Learning Express,
2006.
Buku Tercetak.
Gaya MLA
Grammar Essentials.
3rd ed..
New York:
Learning Express,
2006.
Buku Tercetak.
Gaya Turabian
Grammar Essentials.
New York:
Learning Express,
2006.
Buku Tercetak.