APA

Elgerd (Olle I.), .Electric Energy Systems Theory: An Introduction Ed.Ii. : .

Chicago

Elgerd (Olle I.), .Electric Energy Systems Theory: An Introduction Ed.Ii. : .

Harvard

Elgerd (Olle I.), .Electric Energy Systems Theory: An Introduction Ed.Ii. : .

MLA

Elgerd (Olle I.), .: . .