Sink, M. (2019). Moon Denver, Boulder & Colorado Springs (Second edition.). Avalon Travel.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रSink, Mindy. Moon Denver, Boulder & Colorado Springs. Second edition. Berkeley, CA: Avalon Travel, 2019.
एमएलए (8वां संस्करण) प्रशस्ति पत्रSink, Mindy. Moon Denver, Boulder & Colorado Springs. Second edition. Avalon Travel, 2019.
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