Canada. Natural Resources Intelligence Branch & Voorhis, E. (1930). Historic forts and trading posts of the French regime and of the English fur trading companies.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रCanada. Natural Resources Intelligence Branch और Ernest Voorhis. Historic Forts and Trading Posts of the French Regime and of the English Fur Trading Companies. [Ottawa, 1930.
एमएलए (8वां संस्करण) प्रशस्ति पत्रCanada. Natural Resources Intelligence Branch और Ernest Voorhis. Historic Forts and Trading Posts of the French Regime and of the English Fur Trading Companies. 1930.
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