Gaya APA

hewings, M. (2001). Advanced grammar in use : a self-study reference and practice book for advanced learners of english (2nd ed. ). Jakarta: Erlangga.

Gaya MLA

hewings, Martin. "Advanced grammar in use : a self-study reference and practice book for advanced learners of english ". 2nd ed. Jakarta: Erlangga, 2001. Text.