F G Thompson. (1992). Electrical installation and workshop technology; Vol.1. London: Longman.
Dyfyniad Arddull ChicagoF G Thompson. Electrical Installation and Workshop Technology; Vol.1. London: Longman, 1992.
Dyfyniad MLAF G Thompson. Electrical Installation and Workshop Technology; Vol.1. London: Longman, 1992.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.