Gaya APA
Napa, Pieter A.. (1991).
Basic English grammar .
Yogjakarta:
Kanisius.
Gaya Chicago
Napa, Pieter A..
Basic English grammar.
Yogjakarta:
Kanisius,
1991.
Text.
Gaya MLA
Napa, Pieter A..
Basic English grammar.
Yogjakarta:
Kanisius,
1991.
Text.
Gaya Turabian
Napa, Pieter A..
Basic English grammar.
Yogjakarta:
Kanisius,
1991.
Print.