(1995). Hướng dẫn học Headway: Student's book and Workbook. Tp. HCM: Nxb. Tp. HCM.
Dyfyniad Arddull ChicagoHướng Dẫn Học Headway: Student's Book and Workbook. Tp. HCM: Nxb. Tp. HCM, 1995.
Dyfyniad MLAHướng Dẫn Học Headway: Student's Book and Workbook. Tp. HCM: Nxb. Tp. HCM, 1995.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.