Gaya APA

Costinett, S. (1994). a Communicative Course in English : spectrum 5 / Sandra Costinett, Donald R. H. Byrd . New York: Longman.

Gaya MLA

Costinett, Sandra. "a Communicative Course in English : spectrum 5 / Sandra Costinett, Donald R. H. Byrd". New York: Longman, 1994. Buku.