Dyfyniad APA

McLean-Conner, P. (2009). Energy efficiency: Principles and practices. Tulsa, Okla: PennWell.

Dyfyniad Arddull Chicago

McLean-Conner, Penni. Energy Efficiency: Principles and Practices. Tulsa, Okla: PennWell, 2009.

Dyfyniad MLA

McLean-Conner, Penni. Energy Efficiency: Principles and Practices. Tulsa, Okla: PennWell, 2009.

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