Gaya APA

SCHOENBERG, I, E., HELLEGERS, L, [. (2000). Focus on grammar : (2nd ed). New York: Longman.

Gaya MLA

SCHOENBERG, Irene, E.., HELLEGERS, Louisa, [ed.]. "Focus on grammar :". 2nd ed New York: Longman, 2000. Buku.