Gaya APA
Johnston, Janet. (1998).
Understanding and Using English Grammar (3).
New York:
Longman.
Gaya Chicago
Johnston, Janet.
Understanding and Using English Grammar.
3
New York:
Longman,
1998.
Buku.
Gaya MLA
Johnston, Janet.
Understanding and Using English Grammar.
3
New York:
Longman,
1998.
Buku.
Gaya Turabian
Johnston, Janet.
Understanding and Using English Grammar.
3
New York:
Longman,
1998.
Buku.