APA (7th ed.) Citation

Wheeler, R. S. (2013). Helen in the Editor's Chair. Project Gutenberg.

Chicago Style (17th ed.) Citation

Wheeler, Ruthe S. Helen in the Editor's Chair. Project Gutenberg, 2013.

MLA (9th ed.) Citation

Wheeler, Ruthe S. Helen in the Editor's Chair. Project Gutenberg, 2013.

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