Gaya APA
NAPA, P, A.
(1994).
Vocabulary development skills / Pieter A.Napa
(
Cet.ke-2)
.
Yogyakarta:
Kanisius.
Gaya MLA
NAPA, Pieter, A..
"Vocabulary development skills / Pieter A.Napa".
Cet.ke-2
Yogyakarta:
Kanisius,
1994.
Text.