APA (7th ed.) Citation

King, D. A. (2001). The ciphers of the monks: A forgotten number notation of the Middle Ages. Steiner.

Chicago Style (17th ed.) Citation

King, David A. The Ciphers of the Monks: A Forgotten Number Notation of the Middle Ages. Stuttgart: Steiner, 2001.

MLA (9th ed.) Citation

King, David A. The Ciphers of the Monks: A Forgotten Number Notation of the Middle Ages. Steiner, 2001.

Warning: These citations may not always be 100% accurate.