Kurniawati, Atin, and Sukardiyono Sukardiyono. “The Development of Authentic Assessment Instrument to Measure Science Process Skill and Achievement Based on Students’ Performance”. Jurnal Penelitian & Pengembangan Pendidikan Fisika, vol. 4, no. 2, Dec. 2018, pp. 65-74, doi:10.21009/1.04203.