APA (7th ed.) Citation

Johnson, C. (1963). Harold's ABC: Another purple crayon adventure. HarperCollins.

Chicago Style (17th ed.) Citation

Johnson, Crockett. Harold's ABC: Another Purple Crayon Adventure. New York: HarperCollins, 1963.

MLA (9th ed.) Citation

Johnson, Crockett. Harold's ABC: Another Purple Crayon Adventure. HarperCollins, 1963.

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