Haggbloom, S. J. (2002). The 100 most eminent psychologists of the 20th century. Review of General Psychology, 6(2), 139-152. 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.. (Rankings based on: citations, surveys, and awards/honors)
These personality instruments have been available from IPAT, a test publishing company that Cattell and his wife Karen founded (OPP Ltd., Oxford, England is now the parent company of the Institute for Personality and Ability Testing (IPAT) Inc. of Champaign, Illinois).
Russell, M. T. & Karol, D. L. (1994) The 16PF Fifth Edition Administrator's Manual. Champaign, IL: IPAT.[1]
Haggbloom, S. J. (2002). The 100 most eminent psychologists of the 20th century. Review of General Psychology, 6(2), 139-152. 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.. (Rankings based on: citations, surveys, and awards/honors)
Lotz, M. A. C. M. (2008). Beyondism: The thinking of Raymond Bernard Cattell (1905–1998) on religion, and his religious thought. (Masters Dissertation) Pretoria, South Africa: University of South Africa [2]. [Retrieved 12 August 2017]
