Fitzgerald, A., Kingsley, C. J., & Umans, S. D. (1992). ELECTRIC MACHINERY. McGraw-Hill.
Cita Chicago (17th ed.)Fitzgerald, A.E, Charles Jr Kingsley, i Stephen D. Umans. ELECTRIC MACHINERY. New Delhi: McGraw-Hill, 1992.
Cita MLA (9th ed.)Fitzgerald, A.E, et al. ELECTRIC MACHINERY. McGraw-Hill, 1992.
Atenció: Aquestes cites poden no estar 100% correctes.