FERA WIDYATI, Tristya; SARI, Nia; FAZRIN, Intan. Education Of Teacher’s Knowledge And Skills In Washing Hands Of Soap In The Basic School Of The Region in Ponorogo. Journal of Global Research in Public Health, [S. l.], v. 4, n. 2, p. 138–144, 2019. Disponível em: https://www.jgrph.org/index.php/JGRPH/article/view/46. Acesso em: 11 sep. 2025.