Surbrook, T. C. (1997). Interpreting the National Electrical Code (4th ed.). Delmar.
Lua i Stíl Chicago (17ú heag.)Surbrook, Truman C. Interpreting the National Electrical Code. 4th ed. Albany: Delmar, 1997.
Lua MLA (9ú heag.)Surbrook, Truman C. Interpreting the National Electrical Code. 4th ed. Delmar, 1997.
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