Wallwork. Adrian. (2001). International express: Upper-intermediate. Pocket Book. Oxford: Oxford Univ. Press.
शिकागो स्टाइल उद्धरणWallwork. Adrian. International Express: Upper-intermediate. Pocket Book. Oxford: Oxford Univ. Press, 2001.
एमएलए उद्धरणWallwork. Adrian. International Express: Upper-intermediate. Pocket Book. Oxford: Oxford Univ. Press, 2001.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.