Johnson, R. C., & Cox, R. (1981). Electrical wiring design and construction (Rev. ed.). Prentice-Hall.
Lua i Stíl Chicago (17ú heag.)Johnson, Robert C., agus Robert Cox. Electrical Wiring Design and Construction. Rev. ed. Englewood Cliffs, N.J: Prentice-Hall, 1981.
Lua MLA (9ú heag.)Johnson, Robert C., agus Robert Cox. Electrical Wiring Design and Construction. Rev. ed. Prentice-Hall, 1981.
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