APA (7th ed.) Citation

Brown, H. D. (1980). Principles of language learning and teaching. Prentice-Hall.

Chicago Style (17th ed.) Citation

Brown, H. Douglas. Principles of Language Learning and Teaching. Englewood Cliffs, NJ: Prentice-Hall, 1980.

MLA (9th ed.) Citation

Brown, H. Douglas. Principles of Language Learning and Teaching. Prentice-Hall, 1980.