Dyfyniad APA

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

Dyfyniad Arddull Chicago

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

Dyfyniad MLA

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

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.