APA (7th ed.) Citation

New York Public Library. (2009). Handbook of The New York Public Library. Project Gutenberg.

Chicago Style (17th ed.) Citation

New York Public Library. Handbook of The New York Public Library. Project Gutenberg, 2009.

MLA (9th ed.) Citation

New York Public Library. Handbook of The New York Public Library. Project Gutenberg, 2009.

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