Campbell, Donald T. (Novembro de 1960). «Blind variation and selective retention in creative thoughts as in other knowledge processes». Psychological Review. 67 (6): 380–400. PMID13690223. doi:10.1037/h0040373
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Campbell, Donald T. (Novembro de 1960). «Blind variation and selective retention in creative thoughts as in other knowledge processes». Psychological Review. 67 (6): 380–400. PMID13690223. doi:10.1037/h0040373