Gaya APA

Lythall, R., , . (). The J & P Switchgear book an outline of modern switchgear practice ì for the non specialist user . London:: London: Newnes-Butterworths; 1972.

Gaya MLA

Lythall, R.T.., , . "The J & P Switchgear book an outline of modern switchgear practice ì for the non specialist user". London:: London: Newnes-Butterworths; 1972, . Text.