APA (7th ed.) Citation

Ballantyne, R. M., & Pearson. (2007). Black Ivory. Project Gutenberg.

Chicago Style (17th ed.) Citation

Ballantyne, R. M., and Pearson. Black Ivory. Project Gutenberg, 2007.

MLA (9th ed.) Citation

Ballantyne, R. M., and Pearson. Black Ivory. Project Gutenberg, 2007.

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