CLAYTON, A. (1990). THE PERFORMANCE & DESIGN OF DIRECT CURRENT MACHINES. CBS.
Cita Chicago (17th ed.)CLAYTON, A.E. THE PERFORMANCE & DESIGN OF DIRECT CURRENT MACHINES. DELHI: CBS, 1990.
Cita MLA (9th ed.)CLAYTON, A.E. THE PERFORMANCE & DESIGN OF DIRECT CURRENT MACHINES. CBS, 1990.
Atenció: Aquestes cites poden no estar 100% correctes.