Wojciechowska, J. 1993. „The Ecology of Landscape in the Research of the Territorial Recreational Systems” – Polish Scientific Conference, Poznań, 23 – 24th October 1992. Turyzm/Tourism. 3, 2 (Dec. 1993), 92–93. DOI:https://doi.org/10.18778/0867-5856.3.2.12.