Lua APA (7ú heag.)

232978 Watkins, A., & Kitcher, C. (2009). Electrical installation calculations: Basic for technical certificate level 2. Oxford : Newnes.

Lua i Stíl Chicago (17ú heag.)

232978 Watkins, A.J., agus Chris Kitcher. Electrical Installation Calculations: Basic for Technical Certificate Level 2. Oxford : Newnes, 2009.

Lua MLA (9ú heag.)

232978 Watkins, A.J., agus Chris Kitcher. Electrical Installation Calculations: Basic for Technical Certificate Level 2. Oxford : Newnes, 2009.

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