V. Petruk, G. (2019). Quality assessment system for teaching activities.
Chicago-čujuhus (17. p.)V. Petruk, Galina. Quality Assessment System for Teaching Activities. 2019.
MLA-čujuhus (9. p.)V. Petruk, Galina. Quality Assessment System for Teaching Activities. 2019.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.