APA (7th ed.) Citation

Roe, A. S. (2012). I've Been Thinking; or, the Secret of Success. Project Gutenberg.

Chicago Style (17th ed.) Citation

Roe, Azel Stevens. I've Been Thinking; or, the Secret of Success. Project Gutenberg, 2012.

MLA (9th ed.) Citation

Roe, Azel Stevens. I've Been Thinking; or, the Secret of Success. Project Gutenberg, 2012.

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