National Rural Electric Cooperative Association, United States, & Cooper, D. H. (1970). Rural electric facts: American success story.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNational Rural Electric Cooperative Association, United States, और Donald H. Cooper. Rural Electric Facts: American Success Story. [Washington, 1970.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNational Rural Electric Cooperative Association, et al. Rural Electric Facts: American Success Story. 1970.
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