APA (7th ed.) Citation

Humphreys, J. H. (2006). Proportional Representation: A Study in Methods of Election. Project Gutenberg.

Chicago Style (17th ed.) Citation

Humphreys, John H. Proportional Representation: A Study in Methods of Election. Project Gutenberg, 2006.

MLA (9th ed.) Citation

Humphreys, John H. Proportional Representation: A Study in Methods of Election. Project Gutenberg, 2006.

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