Sawin, J. L. (2004). Mainstreaming renewable energy in the 21st century. Washington, DC: Worldwatch Institute.
शिकागो स्टाइल उद्धरणSawin, Janet L. Mainstreaming Renewable Energy in the 21st Century. Washington, DC: Worldwatch Institute, 2004.
एमएलए उद्धरणSawin, Janet L. Mainstreaming Renewable Energy in the 21st Century. Washington, DC: Worldwatch Institute, 2004.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.