APA (7th ed.) Citation

Ostrander, I., Burns, W. J., & Grefé, W. (2009). The Crevice. Project Gutenberg.

Chicago Style (17th ed.) Citation

Ostrander, Isabel, William J. Burns, and Will Grefé. The Crevice. Project Gutenberg, 2009.

MLA (9th ed.) Citation

Ostrander, Isabel, et al. The Crevice. Project Gutenberg, 2009.

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