Cita APA (7th ed.)
Elgerd, O. I. (1982). Electric energy systems theory: An introduction (2nd ed.). McGraw-Hill.
Cita Chicago (17th ed.)
Elgerd, Olle I. Electric Energy Systems Theory: An Introduction. 2nd ed. New York ; New Delhi: McGraw-Hill, 1982.
Cita MLA (9th ed.)
Elgerd, Olle I. Electric Energy Systems Theory: An Introduction. 2nd ed. McGraw-Hill, 1982.
Atenció: Aquestes cites poden no estar 100% correctes.