Rahman, G.; Nasution, R. F.; Lubis, A. R.; Novira, P.; Rahman, L.; Sinaga, E. H. R.; Thaharah, P. I. M.; Afrida, S. N.; Suyanti, R. D.; Darmana, A. Analysis of Constraints and Alternative Solutions to the Implementation of Chemical Practicums in Several High Schools in Medan. J.Pendidik.Kim 2020, 12, 44-51.