Lacy, E. A. (1977). Handbook of electronic safety procedures. Prentice-Hall of India.
Dyfyniad Arddull ChicagoLacy, Edward A. Handbook of Electronic Safety Procedures. New Jersey: Prentice-Hall of India, 1977.
Dyfyniad MLALacy, Edward A. Handbook of Electronic Safety Procedures. Prentice-Hall of India, 1977.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.