APA (7th ed.) Citation

Lebert, M. (2010). 40 years / 40 años / 40 ans. Project Gutenberg.

Chicago Style (17th ed.) Citation

Lebert, Marie. 40 Years / 40 Años / 40 Ans. Project Gutenberg, 2010.

MLA (9th ed.) Citation

Lebert, Marie. 40 Years / 40 Años / 40 Ans. Project Gutenberg, 2010.

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