Gabdarxakovna Shamsutdinova, Rimma, Elena Mikhailovna Shuvalova, and Albina MarselevnaI Mamutdinova. “History Teaching in the Soviet School of the 1920s - 1930s: (for Example, Schools in the City of Kazan)”. Revista San Gregorio 5, no. 20 (December 31, 2017): 72–79. Accessed April 2, 2026. https://revista.sangregorio.edu.ec/index.php/REVISTASANGREGORIO/article/view/517.