APA (7th ed.) Citation

Clark, M. H. (2011). I'll walk alone. Thorndike Press.

Chicago Style (17th ed.) Citation

Clark, Mary Higgins. I'll Walk Alone. Waterville, Maine USA: Thorndike Press, 2011.

MLA (9th ed.) Citation

Clark, Mary Higgins. I'll Walk Alone. Thorndike Press, 2011.