Arkert, P. (1991). Concepts and Comments: A Reader for Students of English as a Second Language. TP.HCM: Đại học Tổng hợp.
Chicago ZitierstilArkert, Patricia. Concepts and Comments: A Reader for Students of English As a Second Language. TP.HCM: Đại học Tổng hợp, 1991.
MLA ZitierstilArkert, Patricia. Concepts and Comments: A Reader for Students of English As a Second Language. TP.HCM: Đại học Tổng hợp, 1991.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.