APA (7th ed.) Citation

Kelly, E. E. (2020). Hello, universe (First paperback edition.). Greenwillow Books.

Chicago Style (17th ed.) Citation

Kelly, Erin Entrada. Hello, Universe. First paperback edition. New York, NY: Greenwillow Books, 2020.

MLA (8th ed.) Citation

Kelly, Erin Entrada. Hello, Universe. First paperback edition. Greenwillow Books, 2020.

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