Não informado. (2018). Research Report S. U.S. Army Engineer Waterways Experiment Station.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Research Report S. Vicksburg, Miss: U.S. Army Engineer Waterways Experiment Station, 2018.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Research Report S. U.S. Army Engineer Waterways Experiment Station, 2018.
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