APA (7th ed.) Citation

Brown, H. D. (1994). Principles of language learning and teaching (3rd ed.). Prentice Hall.

Chicago Style (17th ed.) Citation

Brown, H. Douglas. Principles of Language Learning and Teaching. 3rd ed. New Jersey: Prentice Hall, 1994.

MLA (9th ed.) Citation

Brown, H. Douglas. Principles of Language Learning and Teaching. 3rd ed. Prentice Hall, 1994.