APA (7th ed.) Citation

Clark, M. H. (2016). As time goes by. Simon & Schuster.

Chicago Style (17th ed.) Citation

Clark, Mary Higgins. As Time Goes by. London: Simon & Schuster, 2016.

MLA (9th ed.) Citation

Clark, Mary Higgins. As Time Goes by. Simon & Schuster, 2016.

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