APA (7th ed.) Citation

Lundberg, S., & Smalley, N. (2021). A question mark is half a heart (First U.S. edition.). Houghton Mifflin Harcourt.

Chicago Style (17th ed.) Citation

Lundberg, Sofia, and Nichola Smalley. A Question Mark Is Half a Heart. First U.S. edition. Boston: Houghton Mifflin Harcourt, 2021.

MLA (8th ed.) Citation

Lundberg, Sofia, and Nichola Smalley. A Question Mark Is Half a Heart. First U.S. edition. Houghton Mifflin Harcourt, 2021.

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