Croft Terrell, W., & Summers, W. I. American electricians' handbook: Editores Williams Croft Terrell and Wilford I. Summers (12a ed.).
Lua i Stíl Chicago (17ú heag.)Croft Terrell, Williams, agus Wilford I. Summers. American Electricians' Handbook: Editores Williams Croft Terrell and Wilford I. Summers. 12a ed.
Lua MLA (8ú heag.)Croft Terrell, Williams, agus Wilford I. Summers. American Electricians' Handbook: Editores Williams Croft Terrell and Wilford I. Summers. 12a ed.
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