APA (7th ed.) Citation

Flaubert, G., Sand, G., & McKenzie, A. L. (2004). The George Sand-Gustave Flaubert Letters. Project Gutenberg.

Chicago Style (17th ed.) Citation

Flaubert, Gustave, George Sand, and Aimée L. McKenzie. The George Sand-Gustave Flaubert Letters. Project Gutenberg, 2004.

MLA (9th ed.) Citation

Flaubert, Gustave, et al. The George Sand-Gustave Flaubert Letters. Project Gutenberg, 2004.

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