Cita APA (7a ed.)

Brown, D. (1987). Principles of Language Learning and Teaching. Prentice - Hall.

Cita Chicago Style (17a ed.)

Brown, Douglas. Principles of Language Learning and Teaching. New Jersey, Estados Unidos: Prentice - Hall, 1987.

Cita MLA (9a ed.)

Brown, Douglas. Principles of Language Learning and Teaching. Prentice - Hall, 1987.