Cita APA

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

Chicago Edition Citation

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

Cita MLA

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