(2001). American Headway 1: Student book. Oxford: Oxford University Press.
Trích dẫn kiểu ChicagoAmerican Headway 1: Student Book. Oxford: Oxford University Press, 2001.
MLA引文American Headway 1: Student Book. Oxford: Oxford University Press, 2001.
警告:这些引文格式不一定是100%准确.