APA (7th ed.) Citation

Sandburg, C., Petersham, M. F., & Petersham, M. (2008). Rootabaga Stories. Project Gutenberg.

Chicago Style (17th ed.) Citation

Sandburg, Carl, Maud Fuller Petersham, and Miska Petersham. Rootabaga Stories. Project Gutenberg, 2008.

MLA (9th ed.) Citation

Sandburg, Carl, et al. Rootabaga Stories. Project Gutenberg, 2008.

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