APA (7th ed.) Citation

(1997). Catalan's Constant to 1,500,000 Places. Project Gutenberg.

Chicago Style (17th ed.) Citation

Catalan's Constant to 1,500,000 Places. Project Gutenberg, 1997.

MLA (9th ed.) Citation

Catalan's Constant to 1,500,000 Places. Project Gutenberg, 1997.

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