APA (7th ed.) Citation

Habberton, J. (2003). Helen's Babies. Project Gutenberg.

Chicago Style (17th ed.) Citation

Habberton, John. Helen's Babies. Project Gutenberg, 2003.

MLA (9th ed.) Citation

Habberton, John. Helen's Babies. Project Gutenberg, 2003.

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