Gaya APA

NAPA, P, A. (1994). VOCABULARY DEVELOPMENT SKILLS / Pieter A. Napa (Cet. 2). Yogyakarta: Kanisius.

Gaya MLA

NAPA, Pieter, A.. "VOCABULARY DEVELOPMENT SKILLS / Pieter A. Napa". Cet. 2 Yogyakarta: Kanisius, 1994. Text.