Gaya APA

Pugh, E, M., W., I, P, E. (1960). Principles of electricity and magnetism Emerson M. Pugh; Emerson W. ì Pugh . Masschusetts: .

Gaya MLA

Pugh, Emerson, M.., W., I., Pugh,, Emerson. "Principles of electricity and magnetism Emerson M. Pugh; Emerson W. ì Pugh". Masschusetts: , 1960. Text.