APA (7th ed.) Citation

Porte, B. A., & Abolafia, Y. (1989). Harry in trouble. Greenwillow Books.

Chicago Style (17th ed.) Citation

Porte, Barbara Ann, and Yossi Abolafia. Harry in Trouble. New York: Greenwillow Books, 1989.

MLA (8th ed.) Citation

Porte, Barbara Ann, and Yossi Abolafia. Harry in Trouble. Greenwillow Books, 1989.