Kaharu, S. N., Y. Gagaramusu, A. Azizah, N. Kamisani, N. Tadeko, and J. Mansyur. “Development of an Online Two-Tier Test on Objects in Static Fluid”. Pegem Journal of Education and Instruction, vol. 14, no. 3, Apr. 2024, pp. 363-75, doi:10.47750/pegegog.14.03.34.