Dyfyniad APA

Richards, J. C. (1984). Error analysis: Perspectives on second language acquisition. Longman.

Dyfyniad Arddull Chicago

Richards, Jack C. Error Analysis: Perspectives on Second Language Acquisition. London: Longman, 1984.

Dyfyniad MLA

Richards, Jack C. Error Analysis: Perspectives on Second Language Acquisition. Longman, 1984.

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