Hammerton, J. A. Universal history of the world: Written by one hundred and fifty of our foremost living authorities in all branches of historical knowledge. The Amalgamated press.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Hammerton, John Alexander. Universal History of the World: Written by One Hundred and Fifty of Our Foremost Living Authorities in All Branches of Historical Knowledge. London: The Amalgamated press.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Hammerton, John Alexander. Universal History of the World: Written by One Hundred and Fifty of Our Foremost Living Authorities in All Branches of Historical Knowledge. The Amalgamated press.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.