Shaffer, J. J. (2017). City and country. National Geographic.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रShaffer, Jody Jensen. City and Country. Washington, D.C.: National Geographic, 2017.
एमएलए (8वां संस्करण) प्रशस्ति पत्रShaffer, Jody Jensen. City and Country. National Geographic, 2017.
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