@article{Fromm1990,
  author    = {Fromm, Erich},
  title     = {Wolnosc, determinizm, alternatywizm},
  journal   = {Colloquia Communia, Warschau (Universytet Warszawa) No. 48-53 (= No. 1-6, 1990), pp. 91-114. [= 1964a, last chapter]},
  year      = {1990},
  language  = {pl}
}