FITZGERALD A E , K. C. A. U. S. (2016). ELECTRIC MACHINERY (6TH.). McGRAW HILL.
Lua i Stíl Chicago (17ú heag.)FITZGERALD A E , KINGSLEY CHARLES AND UMANS STEPHEN. ELECTRIC MACHINERY. 6TH. NEW DELHI: McGRAW HILL, 2016.
Lua MLA (9ú heag.)FITZGERALD A E , KINGSLEY CHARLES AND UMANS STEPHEN. ELECTRIC MACHINERY. 6TH. McGRAW HILL, 2016.
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