Zając, D. „Economic Activity of the Population in Developing Non-Agricultural Sphere in Border Powiats of Podkarpackie Voivodship”. TRANSBORDER ECONOMICS. International Journal on Transborder Economics, Finance, Politics and Statistics., t. 1, nr 2, listopad 2023, s. 127-38, https://journals.ur.edu.pl/te/article/view/8612.