Hubert, C. I. (2002). Electric machines: Theory, operation, applications, adjustment, and control (2nd ed.). Prentice Hall.

Hubert, Charles I. Electric Machines: Theory, Operation, Applications, Adjustment, and Control. 2nd ed. Upper Saddle River, NJ ; New Delhi: Prentice Hall, 2002.

Hubert, Charles I. Electric Machines: Theory, Operation, Applications, Adjustment, and Control. 2nd ed. Prentice Hall, 2002.