Gaya APA

Inc, E, L, S. (1976). English Book Four English Language Serviices, Inc (Cetakan ke-18). New York: Collier Macmillan International, Inc.

Gaya MLA

Inc, English, Language, Serviices,. "English Book Four English Language Serviices, Inc". Cetakan ke-18 New York: Collier Macmillan International, Inc, 1976. >