English for the Energy Industry. Oxford University Press.
शिकागो स्टाइल उद्धरणEnglish for the Energy Industry. Oxford University Press.
एमएलए उद्धरणEnglish for the Energy Industry. Oxford University Press.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.