Soars, J., & Soars, L. (1989). Headway, Advanced: Workbook. Oxford: Oxford University Press.
शिकागो स्टाइल उद्धरणSoars, John, और Liz Soars. Headway, Advanced: Workbook. Oxford: Oxford University Press, 1989.
एमएलए उद्धरणSoars, John, और Liz Soars. Headway, Advanced: Workbook. Oxford: Oxford University Press, 1989.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.