Ramadhani, M. H., and P. W. Titisari. “Laboratory Hands-on Activity: A Case Study in Senior High School of Pekanbaru-Indonesia”. JPBI (Jurnal Pendidikan Biologi Indonesia), vol. 5, no. 2, June 2019, pp. 253-68, doi:10.22219/jpbi.v5i2.8457.