Earley, M. W., Murray, R. H., & Caloggero, J. M. National electrical code handbook (6a ed.).
Lua i Stíl Chicago (17ú heag.)Earley, Mark W., Richard H. Murray, agus John M. Caloggero. National Electrical Code Handbook. 6a ed.
Lua MLA (8ú heag.)Earley, Mark W., et al. National Electrical Code Handbook. 6a ed.
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