ŻYWCZOK, Alicja. Zeal – An Anachronistic or Timeless Category: Its Types and Meaning in Theoretical and Applied Pedagogy. Paedagogia Christiana. Online. 12 April 2023. Vol. 50, no. 2, pp. 37-67. [Accessed 1 July 2024]. DOI 10.12775/PCh.2022.014.