Παραπομπή σε μορφή APA (7η εκδ.)

Hopper, V. F. (2000). Medieval number symbolism: Its sources, meaning, and influence on thought and expression. Dover.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Hopper, Vincent Foster. Medieval Number Symbolism: Its Sources, Meaning, and Influence on Thought and Expression. Mineola, New York: Dover, 2000.

Παραπομπή σε μορφή MLA (8th εκδ.)

Hopper, Vincent Foster. Medieval Number Symbolism: Its Sources, Meaning, and Influence on Thought and Expression. Dover, 2000.