APA Citation

Hemphill, S. (1990). The number Pi. Champaign, Ill.: Project Gutenberg.

Chicago Style Citation

Hemphill, Scott. The Number Pi. Champaign, Ill.: Project Gutenberg, 1990.

MLA Citation

Hemphill, Scott. The Number Pi. Champaign, Ill.: Project Gutenberg, 1990.

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