Czyrwik-Sołjan, I. “Catholic Pilgrimages of National Minorities in the United States, Exemplified by the Sanctuary of the Virgin Mary of Częstochowa in Doylestown”. Turyzm/Tourism, vol. 3, no. 1, June 1993, pp. 41-55, doi:10.18778/0867-5856.3.1.03.