APA (7th ed.) Citation

Ballantyne, R. M. (2007). Rivers of Ice. Project Gutenberg.

Chicago Style (17th ed.) Citation

Ballantyne, R. M. Rivers of Ice. Project Gutenberg, 2007.

MLA (9th ed.) Citation

Ballantyne, R. M. Rivers of Ice. Project Gutenberg, 2007.

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