Toi, Miho; Batson, C. Daniel (1982). "More evidence that empathy is a source of altruistic motivation". Journal of Personality and Social Psychology. 43 (2): 281–292. doi:10.1037/0022-3514.43.2.281. ISSN0022-3514.
Batson, C. D.; Dyck, J. L.; Brandt, J. R.; Batson, J. G.; Powell, A. L. (1988). "Five Studies Testing Two New Egoistic Alternatives to the Empathy-Altruism Hypothesis". Journal of Personality and Social Psychology. 55 (1): 52–77. doi:10.1037/0022-3514.55.1.52. PMID3418490.
Batson, C. D.; Dyck, J. L.; Brandt, J. R.; Batson, J. G.; Powell, A. L. (1988). "Five Studies Testing Two New Egoistic Alternatives to the Empathy-Altruism Hypothesis". Journal of Personality and Social Psychology. 55 (1): 52–77. doi:10.1037/0022-3514.55.1.52. PMID3418490.
Toi, Miho; Batson, C. Daniel (1982). "More evidence that empathy is a source of altruistic motivation". Journal of Personality and Social Psychology. 43 (2): 281–292. doi:10.1037/0022-3514.43.2.281. ISSN0022-3514.