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