Dyfyniad APA
Cassedy,Edward S, & Peter Z.Grossman. (1990). Introduction to Energy Resources,Technology,and Society (3rd ed.). Cambridge University press.
Dyfyniad Arddull Chicago
Cassedy,Edward S, and Peter Z.Grossman. Introduction to Energy Resources,Technology,and Society. 3rd ed. New York: Cambridge University press, 1990.
Dyfyniad MLA
Cassedy,Edward S, and Peter Z.Grossman. Introduction to Energy Resources,Technology,and Society. 3rd ed. Cambridge University press, 1990.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.