Whitson, S. G., & Phimister, R. A. (2006). Footprints on the horizon: Pine ridge portraits series, book 3 (Unabridged.). Recorded Books Inc..
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रWhitson, Stephanie Grace, और Ruth Ann Phimister. Footprints on the Horizon: Pine Ridge Portraits Series, Book 3. Unabridged. Prince Frederick: Recorded Books Inc., 2006.
एमएलए (8वां संस्करण) प्रशस्ति पत्रWhitson, Stephanie Grace, और Ruth Ann Phimister. Footprints on the Horizon: Pine Ridge Portraits Series, Book 3. Unabridged. Recorded Books Inc., 2006.
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