Kathrens, G. (2023). Challenge of the stallions: The legend of Cloud and the wild horses of the Rockies. The Cloud Foundation and Fox Chapel Publishing.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रKathrens, Ginger. Challenge of the Stallions: The Legend of Cloud and the Wild Horses of the Rockies. Mount Joy, PA: The Cloud Foundation and Fox Chapel Publishing, 2023.
एमएलए (8वां संस्करण) प्रशस्ति पत्रKathrens, Ginger. Challenge of the Stallions: The Legend of Cloud and the Wild Horses of the Rockies. The Cloud Foundation and Fox Chapel Publishing, 2023.
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