Harding, K., & Taylor, L. (2007). International express: Student's book : Upper-Intermediate. New York: Oxford University Press.
Dyfyniad Arddull ChicagoHarding, Keith., và Liz Taylor. International Express: Student's Book : Upper-Intermediate. New York: Oxford University Press, 2007.
Dyfyniad MLAHarding, Keith., và Liz Taylor. International Express: Student's Book : Upper-Intermediate. New York: Oxford University Press, 2007.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.