APA (7th ed.) Citation

Fire-Fly, F., Billings, H., & Hartwell, A. (2008). The Ducks and Frogs, A Tale of the Bogs. Project Gutenberg.

Chicago Style (17th ed.) Citation

Fire-Fly, Fanny, Hammatt Billings, and Alonzo Hartwell. The Ducks and Frogs, A Tale of the Bogs. Project Gutenberg, 2008.

MLA (9th ed.) Citation

Fire-Fly, Fanny, et al. The Ducks and Frogs, A Tale of the Bogs. Project Gutenberg, 2008.

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