Penggayaan APA

LUBIS, Yusnaini. (1988). Developing Communicative Proficiency in the English as a foreign Language (EFL) Class . Jakarta: DEPDIKBUD.

Chicago Style

LUBIS, Yusnaini. Developing Communicative Proficiency in the English as a foreign Language (EFL) Class. Jakarta: DEPDIKBUD, 1988. Buku.

MLA Style

LUBIS, Yusnaini. Developing Communicative Proficiency in the English as a foreign Language (EFL) Class. Jakarta: DEPDIKBUD, 1988. Buku.

Turabian Style

LUBIS, Yusnaini. Developing Communicative Proficiency in the English as a foreign Language (EFL) Class. Jakarta: DEPDIKBUD, 1988. Buku.