APA (7th ed.) Citation

Bemelmans, L. (1943). Now I lay me down to sleep. The Viking press.

Chicago Style (17th ed.) Citation

Bemelmans, Ludwig. Now I Lay Me Down to Sleep. New York: The Viking press, 1943.

MLA (9th ed.) Citation

Bemelmans, Ludwig. Now I Lay Me Down to Sleep. The Viking press, 1943.