Keller, K. J. (2010). Electrical safety code manual: A plain language guide to National Electrical Code, OSHA, and NFPA 70E. Elsevier/BH. https://doi.org/10.1016/C2009-0-20021-3
Cita Chicago (17th ed.)Keller, K. J. Electrical Safety Code Manual: A Plain Language Guide to National Electrical Code, OSHA, and NFPA 70E. Amsterdam: Elsevier/BH, 2010. https://doi.org/10.1016/C2009-0-20021-3.
Cita MLA (9th ed.)Keller, K. J. Electrical Safety Code Manual: A Plain Language Guide to National Electrical Code, OSHA, and NFPA 70E. Elsevier/BH, 2010. https://doi.org/10.1016/C2009-0-20021-3.
Atenció: Aquestes cites poden no estar 100% correctes.