Harding, K., & Taylor, L. (2005). International express: Intermediate. Student's book. Oxford: Oxford Univ. Press.
Chicago Style aipamenaHarding, Keith, và Liz Taylor. International Express: Intermediate. Student's Book. Oxford: Oxford Univ. Press, 2005.
MLA aipamenaHarding, Keith, và Liz Taylor. International Express: Intermediate. Student's Book. Oxford: Oxford Univ. Press, 2005.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.