BEST, P. J. An Essay on why some East Slavs from Galicia and Upper Hungary became Russians in the USA. Limes. Studia i materiały z dziejów Europy Środkowo-Wschodniej (czasopismo archiwalne), [S. l.], n. 12, p. 117–124, 2019. Disponível em: https://journals.ur.edu.pl/limes/article/view/11361. Acesso em: 5 grudz. 2025.