Dyfyniad APA

Betty Schrampfer Azar. (2000). Understanding and using English grammar; Workbook. New York: Longman.

Dyfyniad Arddull Chicago

Betty Schrampfer Azar. Understanding and Using English Grammar; Workbook. New York: Longman, 2000.

Dyfyniad MLA

Betty Schrampfer Azar. Understanding and Using English Grammar; Workbook. New York: Longman, 2000.

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