APA (7th ed.) Citation

Johnson, C. (1983). Harold and the purple crayon. HarperCollins Children's Books.

Chicago Style (17th ed.) Citation

Johnson, Crockett. Harold and the Purple Crayon. New York, NY: HarperCollins Children's Books, 1983.

MLA (9th ed.) Citation

Johnson, Crockett. Harold and the Purple Crayon. HarperCollins Children's Books, 1983.

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