(1980). Bookdealers in North America: A directory of dealers in secondhand and antiquarian books in Canada and the United States of America, 1980-82 (8th ed.). Sheppard Press.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Bookdealers in North America: A Directory of Dealers in Secondhand and Antiquarian Books in Canada and the United States of America, 1980-82. 8th ed. London: Sheppard Press, 1980.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Bookdealers in North America: A Directory of Dealers in Secondhand and Antiquarian Books in Canada and the United States of America, 1980-82. 8th ed. Sheppard Press, 1980.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.