Soars, J., & Soars, L. (2002). American headway starter: Student book. Oxford: Oxford Univ. Press.
Dyfyniad Arddull ChicagoSoars, John, và Liz Soars. American Headway Starter: Student Book. Oxford: Oxford Univ. Press, 2002.
Dyfyniad MLASoars, John, và Liz Soars. American Headway Starter: Student Book. Oxford: Oxford Univ. Press, 2002.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.