Ackert, P. (1985). Concepts and comments: A reader for students of English as a second language. New York: Holt.
Dyfyniad Arddull ChicagoAckert, Patricia. Concepts and Comments: A Reader for Students of English As a Second Language. New York: Holt, 1985.
Dyfyniad MLAAckert, Patricia. Concepts and Comments: A Reader for Students of English As a Second Language. New York: Holt, 1985.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.