Dyfyniad APA

Ellis, R. (1997). Second Language Acquisition. Oxford University Press.

Dyfyniad Arddull Chicago

Ellis, Rod. Second Language Acquisition. Oxford: Oxford University Press, 1997.

Dyfyniad MLA

Ellis, Rod. Second Language Acquisition. Oxford University Press, 1997.

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