Delobeau, F. (1971). Environment of the earth, tr. from French by Janet Rountree Lesh. D-Reidel.
शिकागो स्टाइल उद्धरणDelobeau, Francis. Environment of the Earth, Tr. from French by Janet Rountree Lesh. Holland: D-Reidel, 1971.
एमएलए उद्धरणDelobeau, Francis. Environment of the Earth, Tr. from French by Janet Rountree Lesh. D-Reidel, 1971.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.