Singular, S., & Singular, J. (2016). Shadow on the mountain: Nancy Pfister, Dr. William Styler, and the murder of Aspen's golden girl (First edition.). St. Martin's Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रSingular, Stephen, और Joyce Singular. Shadow on the Mountain: Nancy Pfister, Dr. William Styler, and the Murder of Aspen's Golden Girl. First edition. New York: St. Martin's Press, 2016.
एमएलए (8वां संस्करण) प्रशस्ति पत्रSingular, Stephen, और Joyce Singular. Shadow on the Mountain: Nancy Pfister, Dr. William Styler, and the Murder of Aspen's Golden Girl. First edition. St. Martin's Press, 2016.
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