APA (7th ed.) Citation

Na, I. S. (2009). A book of sleep (1st American ed.). Alfred A. Knopf.

Chicago Style (17th ed.) Citation

Na, Il Sung. A Book of Sleep. 1st American ed. New York: Alfred A. Knopf, 2009.

MLA (8th ed.) Citation

Na, Il Sung. A Book of Sleep. 1st American ed. Alfred A. Knopf, 2009.

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