APA (7th ed.) Citation

Green, P. B. (2007). A History of Nursery Rhymes. Project Gutenberg.

Chicago Style (17th ed.) Citation

Green, Percy B. A History of Nursery Rhymes. Project Gutenberg, 2007.

MLA (9th ed.) Citation

Green, Percy B. A History of Nursery Rhymes. Project Gutenberg, 2007.

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