APA (7th ed.) Citation

Figuier, L., & Bristow, H. W. (2012). The World Before the Deluge. Project Gutenberg.

Chicago Style (17th ed.) Citation

Figuier, Louis, and H. W. Bristow. The World Before the Deluge. Project Gutenberg, 2012.

MLA (9th ed.) Citation

Figuier, Louis, and H. W. Bristow. The World Before the Deluge. Project Gutenberg, 2012.

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