APA (7th ed.) Citation

Balzac, H. d., & Wormeley, K. P. (2004). Adieu. Project Gutenberg.

Chicago Style (17th ed.) Citation

Balzac, Honoré de, and Katharine Prescott Wormeley. Adieu. Project Gutenberg, 2004.

MLA (9th ed.) Citation

Balzac, Honoré de, and Katharine Prescott Wormeley. Adieu. Project Gutenberg, 2004.

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