Dyfyniad APA

Priest ,Joseph. (1984). Energy: Principles Problems alternatives (3rd ed.). Addison Wesley.

Dyfyniad Arddull Chicago

Priest ,Joseph. Energy: Principles Problems Alternatives. 3rd ed. Reading Mass: Addison Wesley, 1984.

Dyfyniad MLA

Priest ,Joseph. Energy: Principles Problems Alternatives. 3rd ed. Addison Wesley, 1984.

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