Harl, K. W. (2023). Empires of the steppes: A history of the nomadic tribes who shaped civilization. Hanover Square Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रHarl, Kenneth W. Empires of the Steppes: A History of the Nomadic Tribes Who Shaped Civilization. Toronto, Ontario, Canada: Hanover Square Press, 2023.
एमएलए (8वां संस्करण) प्रशस्ति पत्रHarl, Kenneth W. Empires of the Steppes: A History of the Nomadic Tribes Who Shaped Civilization. Hanover Square Press, 2023.
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