Singer, A. (2017). What is the president's job? (First American edition.). DK Publishing.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रSinger, Allison. What Is the President's Job? First American edition. New York, New York: DK Publishing, 2017.
एमएलए (8वां संस्करण) प्रशस्ति पत्रSinger, Allison. What Is the President's Job? First American edition. DK Publishing, 2017.
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