Dyfyniad APA

Johansson, T. B., & Burnham, L. (1993). Renewable energy: Sources for fuels and electricity. Island Press.

Dyfyniad Arddull Chicago

Johansson, Thomas B., and Laurie Burnham. Renewable Energy: Sources for Fuels and Electricity. Washington, D.C.: Island Press, 1993.

Dyfyniad MLA

Johansson, Thomas B., and Laurie Burnham. Renewable Energy: Sources for Fuels and Electricity. Island Press, 1993.

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