Hughes, J. (1843). A lecture on the mixture of civil and ecclesiastical power: In the governments of the Middle Ages. New York.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रHughes, John. A Lecture on the Mixture of Civil and Ecclesiastical Power: In the Governments of the Middle Ages. New York, 1843.
एमएलए (8वां संस्करण) प्रशस्ति पत्रHughes, John. A Lecture on the Mixture of Civil and Ecclesiastical Power: In the Governments of the Middle Ages. New York, 1843.
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