APA (7th ed.) Citation

Clark, M. H. (2000). Before I say Goodbye. Pocket Books.

Chicago Style (17th ed.) Citation

Clark, Mary Higgins. Before I Say Goodbye. London: Pocket Books, 2000.

MLA (9th ed.) Citation

Clark, Mary Higgins. Before I Say Goodbye. Pocket Books, 2000.

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