Zuhroh, D. F., Widiyawati, W. and Jannah, N. H. (2021) “ANALYSIS OF CHANGES IN HAND WASHING TECHNIQUES IN PRESCHOOL CHILDREN THROUGH THE DEMONSTRATION METHOD”, Journal Universitas Muhammadiyah Gresik Engineering, Social Science, and Health International Conference (UMGESHIC), 1(2), pp. 784–792. doi: 10.30587/umgeshic.v1i2.3454.