Haass, R. (2023). The bill of obligations: The ten habits of good citizens. Penguin Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रHaass, Richard. The Bill of Obligations: The Ten Habits of Good Citizens. New York: Penguin Press, 2023.
एमएलए (8वां संस्करण) प्रशस्ति पत्रHaass, Richard. The Bill of Obligations: The Ten Habits of Good Citizens. Penguin Press, 2023.
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