APA (7th ed.) Citation

Neuschwander, C., & Geehan, W. (1999). Sir Cumference and the dragon of pi: A math adventure. Charlesbridge Publishing.

Chicago Style (17th ed.) Citation

Neuschwander, Cindy, and Wayne Geehan. Sir Cumference and the Dragon of Pi: A Math Adventure. Watertown: Charlesbridge Publishing, 1999.

MLA (9th ed.) Citation

Neuschwander, Cindy, and Wayne Geehan. Sir Cumference and the Dragon of Pi: A Math Adventure. Charlesbridge Publishing, 1999.

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