Hughes, A., & Drury, B. (2013). Electric motors and drives: Fundamentals, types and applications (4th ed.). Elsevier.
Lua i Stíl Chicago (17ú heag.)Hughes, Austin, agus Bill Drury. Electric Motors and Drives: Fundamentals, Types and Applications. 4th ed. Amsterdam: Elsevier, 2013.
Lua MLA (9ú heag.)Hughes, Austin, agus Bill Drury. Electric Motors and Drives: Fundamentals, Types and Applications. 4th ed. Elsevier, 2013.
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