Dyfyniad APA

Crystal, D. (2013). English as a global language. Cambridge University.

Dyfyniad Arddull Chicago

Crystal, David. English As a Global Language. Cambridge University, 2013.

Dyfyniad MLA

Crystal, David. English As a Global Language. Cambridge University, 2013.

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