Criswell, E. H. (1940). Lewis and Clark: Linguistic pioneers. The University of Missouri.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रCriswell, Elijah Harry. Lewis and Clark: Linguistic Pioneers. The University of Missouri, 1940.
एमएलए (8वां संस्करण) प्रशस्ति पत्रCriswell, Elijah Harry. Lewis and Clark: Linguistic Pioneers. The University of Missouri, 1940.
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