Gaya APA
Writing Student's Book 4. (2005).
Yogyakarta:
Kanisius.
Gaya Chicago
Writing Student's Book 4.
.
Yogyakarta:
Kanisius,
2005.
.
Gaya MLA
Writing Student's Book 4.
.
Yogyakarta:
Kanisius,
2005.
.
Gaya Turabian
Writing Student's Book 4.
Yogyakarta:
Kanisius,
2005.
.