APA (7th ed.) Citation

King-Smith, D., & Hemmant, L. (1990). Ace, the very important pig (1st American ed.). Crown Publishers.

Chicago Style (17th ed.) Citation

King-Smith, Dick, and Lynette Hemmant. Ace, the Very Important Pig. 1st American ed. New York: Crown Publishers, 1990.

MLA (9th ed.) Citation

King-Smith, Dick, and Lynette Hemmant. Ace, the Very Important Pig. 1st American ed. Crown Publishers, 1990.