APA (7th ed.) Citation

Burgess, T. W., & Cady, H. (2004). The Adventures of Grandfather Frog. Project Gutenberg.

Chicago Style (17th ed.) Citation

Burgess, Thornton W., and Harrison Cady. The Adventures of Grandfather Frog. Project Gutenberg, 2004.

MLA (9th ed.) Citation

Burgess, Thornton W., and Harrison Cady. The Adventures of Grandfather Frog. Project Gutenberg, 2004.

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