232978 Watkins, A., & Kitcher, C. (2009). Electrical installation calculations: Basic for technical certificate level 2. Oxford : Newnes.
Citazione stile Chigago Style (17a edizione)232978 Watkins, A.J., e Chris Kitcher. Electrical Installation Calculations: Basic for Technical Certificate Level 2. Oxford : Newnes, 2009.
Citatione MLA (9a ed.)232978 Watkins, A.J., e Chris Kitcher. Electrical Installation Calculations: Basic for Technical Certificate Level 2. Oxford : Newnes, 2009.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.