Wrench, J. E. (1931). The march of civilization: Ancient, medieval, and modern world. Charles Scribner's Sons.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रWrench, J. E. The March of Civilization: Ancient, Medieval, and Modern World. New York: Charles Scribner's Sons, 1931.
एमएलए (8वां संस्करण) प्रशस्ति पत्रWrench, J. E. The March of Civilization: Ancient, Medieval, and Modern World. Charles Scribner's Sons, 1931.
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