APA (7th ed.) Citation

Naylor, C. W. (2009). Heart Talks. Project Gutenberg.

Chicago Style (17th ed.) Citation

Naylor, Charles Wesley. Heart Talks. Project Gutenberg, 2009.

MLA (9th ed.) Citation

Naylor, Charles Wesley. Heart Talks. Project Gutenberg, 2009.

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