Saryati, Hunik. “The Relationship Of Lead Levels To Enzym SGPT (Serum Glutamic Pyruvic Transaminase) Levels In The Blood At Public Refueling Station Operator In Gombel Semarang”. KESMAS UWIGAMA: Jurnal Kesehatan Masyarakat, vol. 9, no. 1, June 2023, pp. 57-65, doi:10.24903/kujkm.v9i1.1495.