Gaya APA

Hewings, M., Hewings, M. (). Advanced Grammar in Use: a Self-Study Reference and Practice Book for Advanced ... (2nd ed.). Jakarta: Erlangga.

Gaya MLA

Hewings, Martin., Hewings, Martin. "Advanced Grammar in Use: a Self-Study Reference and Practice Book for Advanced ...". 2nd ed. Jakarta: Erlangga, . Text.