APA (7th ed.) Citation

New York Public Library, Llewellyn, C., & Sheehan, B. (2011). Know the past, find the future: The New York Public Library at 100. [Published by Penguin Classics for] The New York Public Library.

Chicago Style (17th ed.) Citation

New York Public Library, Caro Llewellyn, and Beowulf Sheehan. Know the Past, Find the Future: The New York Public Library at 100. [New York]: [Published by Penguin Classics for] The New York Public Library, 2011.

MLA (9th ed.) Citation

New York Public Library, et al. Know the Past, Find the Future: The New York Public Library at 100. [Published by Penguin Classics for] The New York Public Library, 2011.