Robles, J. A. “Raymond M. Smullyan, What Is the Name of This Book? The Riddle of Dracula and Other Logical Puzzles”. Crítica. Revista Hispanoamericana De Filosofía, vol. 13, no. 38, Nov. 2018, pp. 126-30, doi:10.22201/iifs.18704905e.1981.383.