Gaya APA

HEWINGS, M. (2001). Advanced grammer in use : a self-study reference and practice book for advanced loearner of engglish/ Martin Hewings (Ed. 2). Jakarta: Erlangga.

Gaya MLA

HEWINGS, Martin. "Advanced grammer in use : a self-study reference and practice book for advanced loearner of engglish/ Martin Hewings". Ed. 2 Jakarta: Erlangga, 2001. Text.