Priskila, E., A. Priyono Budi Prasetyo, and Y. Ulung Anggraito. “Biology Assessment Survey of Semarang Senior High As a Description of 21st Century Teacher’s Readiness”. Journal of Innovative Science Education, Vol. 9, no. 2, Aug. 2020, pp. 173 -80, doi:10.15294/jise.v8i3.33941.