Hopper, V. F. (1938). Medieval number symbolism: Its sources, meaning, and influences on thought and expression. Columbia University Press.
Chicago-Zitierstil (17. Ausg.)Hopper, Vincent Foster. Medieval Number Symbolism: Its Sources, Meaning, and Influences on Thought and Expression. New York: Columbia University Press, 1938.
MLA-Zitierstil (9. Ausg.)Hopper, Vincent Foster. Medieval Number Symbolism: Its Sources, Meaning, and Influences on Thought and Expression. Columbia University Press, 1938.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.