Gaya APA
Napa, Pieter A. (1992).
Basic english exercises (Cetakan 13).
Yogyakarta:
Kanisius.
Gaya Chicago
Napa, Pieter A.
Basic english exercises.
Cetakan 13
Yogyakarta:
Kanisius,
1992.
Text.
Gaya MLA
Napa, Pieter A.
Basic english exercises.
Cetakan 13
Yogyakarta:
Kanisius,
1992.
Text.
Gaya Turabian
Napa, Pieter A.
Basic english exercises.
Cetakan 13
Yogyakarta:
Kanisius,
1992.
Print.