Siber, K., & Turnham, C. (2018). National parks of the U.S.A. Wide Eyed Editions, an imprint of The Quarto Group.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रSiber, Kate, और Chris Turnham. National Parks of the U.S.A. Minneapolis, MN: Wide Eyed Editions, an imprint of The Quarto Group, 2018.
एमएलए (8वां संस्करण) प्रशस्ति पत्रSiber, Kate, और Chris Turnham. National Parks of the U.S.A. Wide Eyed Editions, an imprint of The Quarto Group, 2018.
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