KOTHARI DP & NAGRATH IJ, . (2002). BASIC ELECTRICAL ENGINEERING. : TATA MC GRAW HILL.
KOTHARI DP & NAGRATH IJ, . 2002. BASIC ELECTRICAL ENGINEERING. : TATA MC GRAW HILL.
KOTHARI DP & NAGRATH IJ, . BASIC ELECTRICAL ENGINEERING. : TATA MC GRAW HILL. 2002.