Desnita, D., and D. Susanti. “Science Process Skills-Based Integrated Instructional Materials to Improve Student Competence Physics Education Prepares Learning Plans on Teaching Skills Lectures”. Jurnal Penelitian & Pengembangan Pendidikan Fisika, Vol. 3, no. 1, June 2017, pp. 35 -42, doi:10.21009/1.03105.