Sudiana, I. K., and I. W. Suja. “Basic Chemistry Practicum Handbook With Occupational Health and Safety (K3) to Prevent Work Accidents in Laboratory: Validity and Feasibility”. Jurnal Pendidikan Dan Pengajaran, vol. 54, no. 1, Mar. 2021, pp. 181-9, doi:10.23887/jpp.v54i1.31934.