Dyfyniad APA

Gairns R. Ruth & Redman S. Stuart. (2009). Natural English. Upper-intermediate: Teacher's book. New York, Oxford University Press, 2009.

Dyfyniad Arddull Chicago

Gairns R. Ruth and Redman S. Stuart. Natural English. Upper-intermediate: Teacher's Book. New York, Oxford University Press, 2009, 2009.

Dyfyniad MLA

Gairns R. Ruth and Redman S. Stuart. Natural English. Upper-intermediate: Teacher's Book. New York, Oxford University Press, 2009, 2009.

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