Haggbloom, Steven J.; Warnick, Renee; Warnick, Jason E.; Jones, Vinessa K.; Yarbrough, Gary L.; Russell, Tenea M.; Borecky, Chris M.; McGahhey, Reagan; Powell, John L.; Beavers, Jamie; Monte, Emmanuelle (2002). „The 100 Most Eminent Psychologists of the 20th Century”. Review of General Psychology. 6 (2): 139—152. S2CID145668721. doi:10.1037/1089-2680.6.2.139.
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Haggbloom, Steven J.; Warnick, Renee; Warnick, Jason E.; Jones, Vinessa K.; Yarbrough, Gary L.; Russell, Tenea M.; Borecky, Chris M.; McGahhey, Reagan; Powell, John L.; Beavers, Jamie; Monte, Emmanuelle (2002). „The 100 Most Eminent Psychologists of the 20th Century”. Review of General Psychology. 6 (2): 139—152. S2CID145668721. doi:10.1037/1089-2680.6.2.139.