APA (7th ed.) Citation

Clark, M. H. (2004). Nighttime is my time. Simon & Schuster.

Chicago Style (17th ed.) Citation

Clark, Mary Higgins. Nighttime Is My Time. New York: Simon & Schuster, 2004.

MLA (9th ed.) Citation

Clark, Mary Higgins. Nighttime Is My Time. Simon & Schuster, 2004.