CAMPBELL, R. W. (1960). Soviet Economic Power Organization, Growth, And Challenge Robert W. Campbell. Houghton Mifflin Company.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रCAMPBELL, Robert W. Soviet Economic Power Organization, Growth, And Challenge Robert W. Campbell. Houghton Mifflin Company, 1960.
एमएलए (8वां संस्करण) प्रशस्ति पत्रCAMPBELL, Robert W. Soviet Economic Power Organization, Growth, And Challenge Robert W. Campbell. Houghton Mifflin Company, 1960.
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