Hadfield, A. National and international knowledge: The limits of the histories of nations / Andrew Hadfield. The Renaissance computer : knowledge technology in the first age of print.(2000).
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Hadfield, Andrew. "National and International Knowledge: The Limits of the Histories of Nations / Andrew Hadfield." The Renaissance Computer : Knowledge Technology in the First Age of Print.(2000) .
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Hadfield, Andrew. "National and International Knowledge: The Limits of the Histories of Nations / Andrew Hadfield." The Renaissance Computer : Knowledge Technology in the First Age of Print.(2000), .
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.