Heywood Andrew. Political Ideologies: An Introduction (5th.). Palgrave Macmillan.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रHeywood Andrew. Political Ideologies: An Introduction. 5th. New York New York: Palgrave Macmillan.
एमएलए (9वां संस्करण) प्रशस्ति पत्रHeywood Andrew. Political Ideologies: An Introduction. 5th. Palgrave Macmillan.
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