Daugherty, C. (1950). Principles of political economy volume 1. Houghton Mifflin co.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रDaugherty, C. Principles of Political Economy Volume 1. Boston: Houghton Mifflin co, 1950.
एमएलए (9वां संस्करण) प्रशस्ति पत्रDaugherty, C. Principles of Political Economy Volume 1. Houghton Mifflin co, 1950.
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