APA (7th ed.) Citation

Spearman, F. H., & Both, A. (2009). The Mountain Divide. Project Gutenberg.

Chicago Style (17th ed.) Citation

Spearman, Frank H., and Armand Both. The Mountain Divide. Project Gutenberg, 2009.

MLA (9th ed.) Citation

Spearman, Frank H., and Armand Both. The Mountain Divide. Project Gutenberg, 2009.

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