National Joint Apprenticeship and Training Committee for the Electrical Industry. (2009). Field reference handbook: [revised for the NEC 2008]. Clifton Park, NY: Delmar Cengage Learning.
Stile di citazione ChicagoNational Joint Apprenticeship and Training Committee for the Electrical Industry. Field Reference Handbook: [revised for the NEC 2008]. Clifton Park, NY: Delmar Cengage Learning, 2009.
Citazione MLANational Joint Apprenticeship and Training Committee for the Electrical Industry. Field Reference Handbook: [revised for the NEC 2008]. Clifton Park, NY: Delmar Cengage Learning, 2009.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.