Discovery Channel School. (2004). Electricity (version 2.0.). Discovery Channel School.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रDiscovery Channel School. Electricity. version 2.0. s.l: Discovery Channel School, 2004.
एमएलए (9वां संस्करण) प्रशस्ति पत्रDiscovery Channel School. Electricity. version 2.0. Discovery Channel School, 2004.
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