"Keith, R. C. (1992). Comparative political philosophy: Studies under the upas tree. Sage publishers.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र"Keith, Ronald C. Comparative Political Philosophy: Studies Under the Upas Tree. Sage publishers, 1992.
एमएलए (9वां संस्करण) प्रशस्ति पत्र"Keith, Ronald C. Comparative Political Philosophy: Studies Under the Upas Tree. Sage publishers, 1992.
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