APA Citation

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

Chicago Style Citation

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

MLA Citation

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

Warning: These citations may not always be 100% accurate.