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Dyfyniad Arddull ChicagoMiller, Robert H. 1910-. Power System Operation. 3rd ed. New York: McGraw-Hill, 1994.
Dyfyniad MLAMiller, Robert H. 1910-. Power System Operation. 3rd ed. New York: McGraw-Hill, 1994.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.