Gaya APA

Harmer, J., THORNBURY, S. (2006). How to teach grammar/ Scott Thornbury; edited by Jeremy Harmer (cet. 6). England: Longman.

Gaya MLA

Harmer, Jeremy., THORNBURY, SCOTT. "How to teach grammar/ Scott Thornbury; edited by Jeremy Harmer". cet. 6 England: Longman, 2006. Text.