APA (7th ed.) Citation

Bates, C. D., Curtis, J., & Merrill, F. T. (2008). On the Tree Top. Project Gutenberg.

Chicago Style (17th ed.) Citation

Bates, Clara Doty, Jessie Curtis, and Frank T. Merrill. On the Tree Top. Project Gutenberg, 2008.

MLA (9th ed.) Citation

Bates, Clara Doty, et al. On the Tree Top. Project Gutenberg, 2008.

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