APA (7th ed.) Citation

Miller R. B., Fuller George D., Nuuttila E. E., & Mattoon W. R. (2011). Forest Trees of Illinois How to Know Them. Project Gutenberg.

Chicago Style (17th ed.) Citation

Miller R. B., Fuller George D., Nuuttila E. E., and Mattoon W. R. Forest Trees of Illinois How to Know Them. Project Gutenberg, 2011.

MLA (9th ed.) Citation

Miller R. B., et al. Forest Trees of Illinois How to Know Them. Project Gutenberg, 2011.

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