APA (7th ed.) Citation

Kelly, E. E. (2017). Hello universe (First edition.). Greenwillow Books, an imprint of HarperCollinsPublishers.

Chicago Style (17th ed.) Citation

Kelly, Erin Entrada. Hello Universe. First edition. New York, NY: Greenwillow Books, an imprint of HarperCollinsPublishers, 2017.

MLA (9th ed.) Citation

Kelly, Erin Entrada. Hello Universe. First edition. Greenwillow Books, an imprint of HarperCollinsPublishers, 2017.

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