F G Thompson. (1992). Electrical installation and workshop technology; Vol.1. London: Longman.
शिकागो स्टाइल उद्धरणF G Thompson. Electrical Installation and Workshop Technology; Vol.1. London: Longman, 1992.
एमएलए उद्धरणF G Thompson. Electrical Installation and Workshop Technology; Vol.1. London: Longman, 1992.
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