APA (7th ed.) Citation

Causey, J., & Francis, D. (2009). Teething Ring. Project Gutenberg.

Chicago Style (17th ed.) Citation

Causey, James, and Dick Francis. Teething Ring. Project Gutenberg, 2009.

MLA (9th ed.) Citation

Causey, James, and Dick Francis. Teething Ring. Project Gutenberg, 2009.

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