Dyfyniad APA

Ortega, L. (2013). Understanding second language acquisition. New York: Routledge.

Dyfyniad Arddull Chicago

Ortega, Lourdes. Understanding Second Language Acquisition. New York: Routledge, 2013.

Dyfyniad MLA

Ortega, Lourdes. Understanding Second Language Acquisition. New York: Routledge, 2013.

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