Soars, J., & Soars, L. (1994). Headway Pre-Intermediate: Student"s Book, Workbook. Oxford: Oxford University Press.
Dyfyniad Arddull ChicagoSoars, John, và Liz Soars. Headway Pre-Intermediate: Student"s Book, Workbook. Oxford: Oxford University Press, 1994.
Dyfyniad MLASoars, John, và Liz Soars. Headway Pre-Intermediate: Student"s Book, Workbook. Oxford: Oxford University Press, 1994.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.