Cita APA

Brown; Douglas. (2007). Principles of language learning and teaching/ Douglas Brown (5a ed.). Estados Unidos de América.

Citación estilo Chicago

Brown; Douglas. Principles of Language Learning and Teaching/ Douglas Brown. 5a ed. Estados Unidos de América, 2007.

Cita MLA

Brown; Douglas. Principles of Language Learning and Teaching/ Douglas Brown. 5a ed. Estados Unidos de América, 2007.