APA (7th ed.) Citation

Na, I. S. (2007). Zzzzz: A book of sleep (1. publ.). Meadowside Children's.

Chicago Style (17th ed.) Citation

Na, Il Sung. Zzzzz: A Book of Sleep. 1. publ. London: Meadowside Children's, 2007.

MLA (9th ed.) Citation

Na, Il Sung. Zzzzz: A Book of Sleep. 1. publ. Meadowside Children's, 2007.

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