DAUGULIS, Ēvalds. LATGALES DZIESMU SVĒTKU HRONOLOĢIJA. Via Latgalica, Rezekne, Latvia, n. 9, p. 75, 2017. DOI: 10.17770/latg2017.9.2725. Disponível em: https://journals.rta.lv/index.php/LATG/article/view/2725.. Acesso em: 6 may. 2024.