Gaya APA
Understanding and Using: English Grammar. (1989).
new jersey:
Prentice-Hall.
Gaya Chicago
Understanding and Using: English Grammar.
ed.2.
new jersey:
Prentice-Hall,
1989.
.
Gaya MLA
Understanding and Using: English Grammar.
ed.2.
new jersey:
Prentice-Hall,
1989.
.
Gaya Turabian
Understanding and Using: English Grammar.
new jersey:
Prentice-Hall,
1989.
.