APA (7th ed.) Citation

Arthur, T. S. (2003). Lessons in Life, for All Who Will Read Them. Project Gutenberg.

Chicago Style (17th ed.) Citation

Arthur, T. S. Lessons in Life, for All Who Will Read Them. Project Gutenberg, 2003.

MLA (9th ed.) Citation

Arthur, T. S. Lessons in Life, for All Who Will Read Them. Project Gutenberg, 2003.

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