Dyfyniad APA

Hoffman, E. J. (1977). The concept of energy: A [sic] inquiry into origins and applications. Ann Arbor Science Publishers.

Dyfyniad Arddull Chicago

Hoffman, E. J. The Concept of Energy: A [sic] Inquiry into Origins and Applications. Ann Arbor, Mich: Ann Arbor Science Publishers, 1977.

Dyfyniad MLA

Hoffman, E. J. The Concept of Energy: A [sic] Inquiry into Origins and Applications. Ann Arbor Science Publishers, 1977.

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