APA (7th ed.) Citation

Havens, M. A., & Tyng, G. (2007). Old Valentines A Love Story. Project Gutenberg.

Chicago Style (17th ed.) Citation

Havens, Munson Aldrich, and Griswold Tyng. Old Valentines A Love Story. Project Gutenberg, 2007.

MLA (9th ed.) Citation

Havens, Munson Aldrich, and Griswold Tyng. Old Valentines A Love Story. Project Gutenberg, 2007.

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