APA (7th ed.) Citation
Clark, M. H. (1977). A stranger is watching. Pocket Books.
Chicago Style (17th ed.) Citation
Clark, Mary Higgins. A Stranger Is Watching. New York: Pocket Books, 1977.
MLA (9th ed.) Citation
Clark, Mary Higgins. A Stranger Is Watching. Pocket Books, 1977.
Warning: These citations may not always be 100% accurate.