CATHEY, J. J., & NASAR, S. A. (1997). Theory and problems of basic electrical engineering.-- ed.2. McGraw-Hill.

CATHEY, Jimmie J., and Syed A. NASAR. Theory and Problems of Basic Electrical Engineering.-- Ed.2. New York: McGraw-Hill, 1997.

CATHEY, Jimmie J., and Syed A. NASAR. Theory and Problems of Basic Electrical Engineering.-- Ed.2. McGraw-Hill, 1997.