Dyfyniad APA

Sawin, J. L. (2004). Mainstreaming renewable energy in the 21st century. Washington, DC: Worldwatch Institute.

Dyfyniad Arddull Chicago

Sawin, Janet L. Mainstreaming Renewable Energy in the 21st Century. Washington, DC: Worldwatch Institute, 2004.

Dyfyniad MLA

Sawin, Janet L. Mainstreaming Renewable Energy in the 21st Century. Washington, DC: Worldwatch Institute, 2004.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.