Arkert, P. (1991). Concepts and Comments: A Reader for Students of English as a Second Language. TP.HCM: Đại học Tổng hợp.
Dyfyniad Arddull ChicagoArkert, Patricia. Concepts and Comments: A Reader for Students of English As a Second Language. TP.HCM: Đại học Tổng hợp, 1991.
Dyfyniad MLAArkert, Patricia. Concepts and Comments: A Reader for Students of English As a Second Language. TP.HCM: Đại học Tổng hợp, 1991.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.