Brown,, K., & Ogilvie,, S. (2009). Concise encyclopedia of languages of the world. Elsevier.
Chicago Style aipamenaBrown,, Keith, and Sarah Ogilvie. Concise Encyclopedia of Languages of the World. New Delhi: Elsevier, 2009.
MLA aipamenaBrown,, Keith, and Sarah Ogilvie. Concise Encyclopedia of Languages of the World. Elsevier, 2009.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.