(1780). A map of America between latitudes 40 and 70 north, and longitudes 45 and 180 west: Exhibiting the principal trading stations of the North West Company. s.n..
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)A Map of America Between Latitudes 40 and 70 North, and Longitudes 45 and 180 West: Exhibiting the Principal Trading Stations of the North West Company. [S.l.: s.n., 1780.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)A Map of America Between Latitudes 40 and 70 North, and Longitudes 45 and 180 West: Exhibiting the Principal Trading Stations of the North West Company. s.n., 1780.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.