Clifford, M. (1991). Electrical wiring and repair: A guide to improving and maintaining residential electrical systems. Prentice-Hall.
Dyfyniad Arddull ChicagoClifford, Martin. Electrical Wiring and Repair: A Guide to Improving and Maintaining Residential Electrical Systems. Engelwood Cliffs, NJ: Prentice-Hall, 1991.
Dyfyniad MLAClifford, Martin. Electrical Wiring and Repair: A Guide to Improving and Maintaining Residential Electrical Systems. Prentice-Hall, 1991.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.