Gaya APA
A. Napa, Pieter. (1991).
Vocabulary development skills/ Pieter A.Napa .
Yogyakarta:
Kanisius.
Gaya Chicago
A. Napa, Pieter.
Vocabulary development skills/ Pieter A.Napa.
Yogyakarta:
Kanisius,
1991.
Text.
Gaya MLA
A. Napa, Pieter.
Vocabulary development skills/ Pieter A.Napa.
Yogyakarta:
Kanisius,
1991.
Text.
Gaya Turabian
A. Napa, Pieter.
Vocabulary development skills/ Pieter A.Napa.
Yogyakarta:
Kanisius,
1991.
Print.