(1986). Headway teacher's book: Intermediate. New York: Oxford University Press.
Trích dẫn kiểu ChicagoHeadway Teacher's Book: Intermediate. New York: Oxford University Press, 1986.
MLA引文Headway Teacher's Book: Intermediate. New York: Oxford University Press, 1986.
警告：这些引文格式不一定是100％准确.