Breidaks, Antons. “Priedēklis pra- augšzemnieku Dialekta Latgaliskajās Izloksnēs”. Baltistica 4, no. 2 (December 31, 1968): 281–287. Accessed October 24, 2026. https://www.zurnalai.vu.lt/baltistica/article/view/41594.