rajagukguk, T., and E. Aritonang. “Identification Of Trichuris Trichiura Worms Eggs in 6-8 Years Old Elementary School Children At GKPS Private Elementary School, Saribudolok, Simalikuta, Simalungun”. JURNAL ANALIS LABORATORIUM MEDIK, vol. 7, no. 2, Dec. 2022, pp. 97-103, doi:10.51544/jalm.v7i2.3462.