APA (7th ed.) Citation

Carle, E. (1999). The very lonely firefly (1. board book ed.). Philomel Books.

Chicago Style (17th ed.) Citation

Carle, Eric. The Very Lonely Firefly. 1. board book ed. New York, NY: Philomel Books, 1999.

MLA (9th ed.) Citation

Carle, Eric. The Very Lonely Firefly. 1. board book ed. Philomel Books, 1999.