Szymańska W, Wiśniewska A. Changes on the tourism services market in Montenegro in 2007–2017. JGPS [Internet]. 2019 Sep. 30 [cited 2024 Nov. 21];9(3):42-9. Available from: https://czasopisma.bg.ug.edu.pl/index.php/JGPS/article/view/3805