Clarfield, G. H. (1980). Timothy pickering and the American Republic. University of Pittsburgh.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रClarfield, Gerald H. Timothy Pickering and the American Republic. Pittsburg: University of Pittsburgh, 1980.
एमएलए (9वां संस्करण) प्रशस्ति पत्रClarfield, Gerald H. Timothy Pickering and the American Republic. University of Pittsburgh, 1980.
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