Gaya APA
NAPA, Pieter A.. (1992).
Basic english Exercises .
Yogjakarta:
Kanisius.
Gaya Chicago
NAPA, Pieter A..
Basic english Exercises.
Yogjakarta:
Kanisius,
1992.
Text.
Gaya MLA
NAPA, Pieter A..
Basic english Exercises.
Yogjakarta:
Kanisius,
1992.
Text.
Gaya Turabian
NAPA, Pieter A..
Basic english Exercises.
Yogjakarta:
Kanisius,
1992.
Print.