APA (7th ed.) Citation

Johnson, C. (2015). Harold at the North Pole: A Christmas journey with the purple crayon (Revised edition.). Harper, an imprint of HarperCollinsPublishers.

Chicago Style (17th ed.) Citation

Johnson, Crockett. Harold at the North Pole: A Christmas Journey with the Purple Crayon. Revised edition. New York: Harper, an imprint of HarperCollinsPublishers, 2015.

MLA (8th ed.) Citation

Johnson, Crockett. Harold at the North Pole: A Christmas Journey with the Purple Crayon. Revised edition. Harper, an imprint of HarperCollinsPublishers, 2015.

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