Gaya APA
Napa, P, A.
(1994).
Vocabolary development skills
(
Cet. 2)
.
Yogyakarta:
Kanisius.
Gaya MLA
Napa, Pieter, A..
"Vocabolary development skills".
Cet. 2
Yogyakarta:
Kanisius,
1994.
Text.