Bicoku, J., G. Dragoshi, i F. Memaj. „INTERNAL MIGRATION OF LABOR AS A REGULATORY MECHANISM IN THE AREA OF A SINGLE CURRENCY. THE EUROZONE AND ALBANIA”. Metody Ilościowe W Badaniach Ekonomicznych, t. 17, nr 4, grudzień 2016, s. 19-30, https://qme.sggw.edu.pl/article/view/3881.