Williams, T. (2021). Empire of grass (First mass market printing.). DAW Books, Inc..
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रWilliams, Tad. Empire of Grass. First mass market printing. New York, NY: DAW Books, Inc., 2021.
एमएलए (8वां संस्करण) प्रशस्ति पत्रWilliams, Tad. Empire of Grass. First mass market printing. DAW Books, Inc., 2021.
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