Παραπομπή APA

Keith Brown & Sarah Ogilvie. (2009). Concise encyclopaedia of languages of the world. Elsevier.

Παραπομπή Chicago Style

Keith Brown και Sarah Ogilvie. Concise Encyclopaedia of Languages of the World. Amsterdam: Elsevier, 2009.

Παραπομπή MLA

Keith Brown και Sarah Ogilvie. Concise Encyclopaedia of Languages of the World. Elsevier, 2009.