Gray, A. (1913). Electrical machine design: The design and specification of direct and alternating current machinery. New York: McGraw-Hill book company.
Παραπομπή Chicago StyleGray, Alexander. Electrical Machine Design: The Design and Specification of Direct and Alternating Current Machinery. New York: McGraw-Hill book company, 1913.
Παραπομπή MLAGray, Alexander. Electrical Machine Design: The Design and Specification of Direct and Alternating Current Machinery. New York: McGraw-Hill book company, 1913.
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