History of Science Society. (2018). Guide to the History of Science. University of Pennsylvania, Department of History and Sociology of Science.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)History of Science Society. Guide to the History of Science. Philadelphia, Pa: University of Pennsylvania, Department of History and Sociology of Science, 2018.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)History of Science Society. Guide to the History of Science. University of Pennsylvania, Department of History and Sociology of Science, 2018.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.