Theory of being to understand reality / edited by Stanislaw Kaminski Marian Kurdzialek Zofia Josefa Zdybicka. - Zdybicka, Zofia Józefa. (OLS)http://pul/name/31713; Kurdziałek, Marian. (OLS)http://pul/name/63853; Kaminski, Stanislaw, sac. (OLS)http://pul/name/47169 (TNKUL, 1980)
Bibliografia in nota.
Testi in inglese, tedesco e francese.