APA (7th ed.) Citation

Daudet, A., Harmelin, M., & Adams, K. (2009). Letters from my Windmill. Project Gutenberg.

Chicago Style (17th ed.) Citation

Daudet, Alphonse, Mireille Harmelin, and Keith Adams. Letters from My Windmill. Project Gutenberg, 2009.

MLA (9th ed.) Citation

Daudet, Alphonse, et al. Letters from My Windmill. Project Gutenberg, 2009.

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