Gaya APA
Basic english grammar. (2000).
Yogyakarta:
Kanisius.
Gaya Chicago
Basic english grammar.
Cet.10.
Yogyakarta:
Kanisius,
2000.
.
Gaya MLA
Basic english grammar.
Cet.10.
Yogyakarta:
Kanisius,
2000.
.
Gaya Turabian
Basic english grammar.
Yogyakarta:
Kanisius,
2000.
.