APA (7th ed.) Citation

Holcombe, W. H. (2011). In Both Worlds. Project Gutenberg.

Chicago Style (17th ed.) Citation

Holcombe, William Henry. In Both Worlds. Project Gutenberg, 2011.

MLA (9th ed.) Citation

Holcombe, William Henry. In Both Worlds. Project Gutenberg, 2011.

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