Tscymbalystov, A.V., Kopytov, A.A., Saraykina, O.S. and Gontarev, S.N. 2017. Efficiency of Motivation Development Models for Hygienic Skills. Journal of History Culture and Art Research. 6, 4 (Sep. 2017), 339-349. DOI:https://doi.org/10.7596/taksad.v6i4.1178.