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.
Trích dẫn kiểu 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.
MLA引文National Joint Apprenticeship and Training Committee for the Electrical Industry. Field Reference Handbook: [revised for the NEC 2008]. Clifton Park, NY: Delmar Cengage Learning, 2009.
警告：這些引文格式不一定是100％准確.