Campbell, Donald T. (November 1960). "Blind variation and selective retention in creative thoughts as in other knowledge processes". Psychological Review. 67 (6): 380–400. doi:10.1037/h0040373. PMID13690223.
Jackson, Robert R.; Chris M. Carter; Michael S. Tarsitano (2001). "Trial-and-error solving of a confinement problem by a jumping spider, Portia fimbriata". Behaviour. 138 (10). Leiden: Koninklijke Brill: 1215–1234. doi:10.1163/15685390152822184. ISSN0005-7959. JSTOR4535886.
Jackson, Robert R.; Chris M. Carter; Michael S. Tarsitano (2001). "Trial-and-error solving of a confinement problem by a jumping spider, Portia fimbriata". Behaviour. 138 (10). Leiden: Koninklijke Brill: 1215–1234. doi:10.1163/15685390152822184. ISSN0005-7959. JSTOR4535886.
nih.gov
pubmed.ncbi.nlm.nih.gov
Campbell, Donald T. (November 1960). "Blind variation and selective retention in creative thoughts as in other knowledge processes". Psychological Review. 67 (6): 380–400. doi:10.1037/h0040373. PMID13690223.
Jackson, Robert R.; Chris M. Carter; Michael S. Tarsitano (2001). "Trial-and-error solving of a confinement problem by a jumping spider, Portia fimbriata". Behaviour. 138 (10). Leiden: Koninklijke Brill: 1215–1234. doi:10.1163/15685390152822184. ISSN0005-7959. JSTOR4535886.