Subudhi, R. N. (1993). Energy options for 21st century. Ashish Pub. House.
शिकागो स्टाइल उद्धरणSubudhi, R. N. Energy Options for 21st Century. New Delhi: Ashish Pub. House, 1993.
एमएलए उद्धरणSubudhi, R. N. Energy Options for 21st Century. Ashish Pub. House, 1993.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.