APA (7th ed.) Citation

Page, G. W., & Schelling, G. L. (2009). The Happy Man. Project Gutenberg.

Chicago Style (17th ed.) Citation

Page, Gerald W., and George Luther Schelling. The Happy Man. Project Gutenberg, 2009.

MLA (9th ed.) Citation

Page, Gerald W., and George Luther Schelling. The Happy Man. Project Gutenberg, 2009.

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