Gaya APA

Murphy, R. (1990). Essential Grammar in Use; A Self-Study Reference and Practice Book for Elementary Students of English (With Answer) . Musselburgh, Scotland: Cambridge University Press.

Gaya MLA

Murphy, Raymond. "Essential Grammar in Use; A Self-Study Reference and Practice Book for Elementary Students of English (With Answer)". Musselburgh, Scotland: Cambridge University Press, 1990. Text.