Whitney, N. (1994). Open doors (student's book 2): Có sách. Oxford: Oxford University Press.
Chicago Style CitationWhitney, Norman. Open Doors (student's Book 2): Có Sách. Oxford: Oxford University Press, 1994.
MLA CitationWhitney, Norman. Open Doors (student's Book 2): Có Sách. Oxford: Oxford University Press, 1994.
Warning: These citations may not always be 100% accurate.