Lua APA (7ú heag.)
Gupta, B. R., & Singhal, V. (2005). Fundamentals of electric machines (3rd ed.). New Age International.
Lua i Stíl Chicago (17ú heag.)
Gupta, B. R., agus Vandana Singhal. Fundamentals of Electric Machines. 3rd ed. Kolkata: New Age International, 2005.
Lua MLA (9ú heag.)
Gupta, B. R., agus Vandana Singhal. Fundamentals of Electric Machines. 3rd ed. New Age International, 2005.
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