APA (7th ed.) Citation

Johnson, C. (1955). Harold and the purple crayon. HarperCollins.

Chicago Style (17th ed.) Citation

Johnson, Crockett. Harold and the Purple Crayon. New York: HarperCollins, 1955.

MLA (8th ed.) Citation

Johnson, Crockett. Harold and the Purple Crayon. HarperCollins, 1955.

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