Kowkiel, Lilia, and Arvydas Pacevičius. “Catholic Priest’s Role in Disseminating Books in Lithuanian Language (Based on Correspondence to Zawadzki’s Publishing House in Wilno)”. Bibliotheca Lituana, vol. 2, Oct. 2012, pp. 211-35, https://doi.org/10.15388/BiblLita.2012.2.15587.