Cita APA (7th ed.)

BROWN, H. D. (1993). Principles of language learning and teaching.-- Ed.3. Prentice Hall.

Cita Chicago (17th ed.)

BROWN, H. Douglas. Principles of Language Learning and Teaching.-- Ed.3. New Jersey: Prentice Hall, 1993.

Cita MLA (9th ed.)

BROWN, H. Douglas. Principles of Language Learning and Teaching.-- Ed.3. Prentice Hall, 1993.