APA (7th ed.) Citation

Clark, M. H. (1978). A stranger is watching. Collins.

Chicago Style (17th ed.) Citation

Clark, Mary Higgins. A Stranger Is Watching. London: Collins, 1978.

MLA (8th ed.) Citation

Clark, Mary Higgins. A Stranger Is Watching. Collins, 1978.

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