Gaya APA

Brown, D. (2007). Teaching by Principles an interactive Approach to Language pedagogy (Cet. 1). amerika serikat: Longman.

Gaya MLA

Brown, Dauglas. "Teaching by Principles an interactive Approach to Language pedagogy". Cet. 1 amerika serikat: Longman, 2007. Buku Pend. Bahasa Inggris.