Soars, L., & Liz & John Soars with Jop Devoy. (1998). New Headway English Course: Upper-intermediate (Workbook with key). Oxford: Oxford University Press.
शिकागो स्टाइल उद्धरणSoars, Liz, और Liz & John Soars with Jop Devoy. New Headway English Course: Upper-intermediate (Workbook With Key). Oxford: Oxford University Press, 1998.
एमएलए उद्धरणSoars, Liz, और Liz & John Soars with Jop Devoy. New Headway English Course: Upper-intermediate (Workbook With Key). Oxford: Oxford University Press, 1998.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.