Cita APA (7a ed.)

Higgins, R. T., & Willems, M. (2020). What about worms!? (First edition.). Hyperion Books for Children.

Cita Chicago Style (17a ed.)

Higgins, Ryan T., y Mo Willems. What About Worms!? First edition. New York: Hyperion Books for Children, 2020.

Cita MLA (8a ed.)

Higgins, Ryan T., y Mo Willems. What About Worms!? First edition. Hyperion Books for Children, 2020.

Precaución: Estas citas no son 100% exactas.