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., III; Beavers, Jamie; Monte, Emmanuelle (2002). «The 100 most eminent psychologists of the 20th century». Review of General Psychology6 (2): 139-52. doi:10.1037/1089-2680.6.2.139.
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., III; Beavers, Jamie; Monte, Emmanuelle (2002). «The 100 most eminent psychologists of the 20th century». Review of General Psychology6 (2): 139-52. doi:10.1037/1089-2680.6.2.139.
Kalikow, T. J. (1983). «Konrad Lorenz's ethological theory: Explanation and ideology, 1938–1943». Journal of the History of Biology16 (1): 39-73. PMID11611248. doi:10.1007/bf00186675.
Kalikow, T. J. (1983). «Konrad Lorenz's ethological theory: Explanation and ideology, 1938–1943». Journal of the History of Biology16 (1): 39-73. PMID11611248. doi:10.1007/bf00186675.