380651 Mullin, R. C., & Smith, R. L. (1977). Electrical wiring: Commercial. New York : Van Nostrand Reinhold.
Cita Chicago (17th ed.)380651 Mullin, Ray C., i Robert L. Smith. Electrical Wiring: Commercial. New York : Van Nostrand Reinhold, 1977.
Cita MLA (9th ed.)380651 Mullin, Ray C., i Robert L. Smith. Electrical Wiring: Commercial. New York : Van Nostrand Reinhold, 1977.
Atenció: Aquestes cites poden no estar 100% correctes.