Gargano, James W. "The Theme of Time in 'The Tell-Tale Heart'." Studies in Short Fiction, Vol. V, no. 1 (Fall 1967): 378-82.

The protagonist's painful insistence in 'proving' himself sane only serves to intensify the idea of his madness."

Gargano, James W. "The Question of Poe's Narrators." College English, Vol. 25, no. 3 (December 1963): 177-81.

Robinson, E. Arthur. "Poe's 'The Tell-Tale Heart'." Nineteenth-Century Fiction, Vol. 19, no. 4 (March 1965): 369-78.

Ward, Alfred C. "Edgar Allan Poe: 'Tales of Mystery and Imagination'." Aspects of the Modern Short Story: English and American, University of London Press, 1924, pp. 32-44.