@article{Mikhailova2021development,
author={Mikhailova, M.S. and Shamovskaya, T.V.},
title={Development of Motivation Sphere in 14- and 15-Year-Olds},
journal={Bulletin of Kemerovo State University. Series: Humanities and Social Sciences},
publisher={Kemerovo State University},
year={2021},
pages={11-20},
volume={5},
issue={1},
}