Dyfyniad APA

Sawhill,John C. (1978). Energy conservation and public policy. Prentice Hall.

Dyfyniad Arddull Chicago

Sawhill,John C. Energy Conservation and Public Policy. New Jersey: Prentice Hall, 1978.

Dyfyniad MLA

Sawhill,John C. Energy Conservation and Public Policy. Prentice Hall, 1978.

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