APA (7th ed.) Citation

Elwell, J. B. (2011). Bridge Axioms and Laws. Project Gutenberg.

Chicago Style (17th ed.) Citation

Elwell, J. B. Bridge Axioms and Laws. Project Gutenberg, 2011.

MLA (9th ed.) Citation

Elwell, J. B. Bridge Axioms and Laws. Project Gutenberg, 2011.

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