Manktelow, K. I. (1999). 《Reasoning and Thinking》. Psychology Press. 8쪽. ISBN978-0-86377-708-0. The Wason selection task has often been claimed to be the single most investigated experimental paradigm in the psychology of reasoning.
Wason, P. C.; Shapiro, Diana (1971). “Natural and contrived experience in a reasoning problem”. 《Quarterly Journal of Experimental Psychology》 23: 63–71. doi:10.1080/00335557143000068.
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Wason, P. C. (1966). 〈Reasoning〉. Foss, B. M. 《New horizons in psychology》 1. Harmondsworth: Penguin. LCCN66005291.