Gaya APA

Murphy, R., Smalzer, W, R. (2008). Grammar in use intermediate with answers (2 nd Ed.). New York: Effendiharahap Publishing Coy.

Gaya MLA

Murphy, Raymond., Smalzer, William, R.. "Grammar in use intermediate with answers". 2 nd Ed. New York: Effendiharahap Publishing Coy, 2008. Text.