Gaya APA
Writing and learning. (1988).
Yogyakarta:
.
Gaya Chicago
Writing and learning.
second edition.
Yogyakarta:
,
1988.
Text.
Gaya MLA
Writing and learning.
second edition.
Yogyakarta:
,
1988.
Text.
Gaya Turabian
Writing and learning.
Yogyakarta:
,
1988.
Print.