Harizon, H., A. Asrial, H. Haryanto, M. D. W. Ernawati, D. A. Kurniawan, F. P. Sinaga, and R. Haryati. “Description of Teacher Responses to the Implementation of Student Process Skills Portfolio Assessment”. Integrated Science Education Journal, Vol. 4, no. 3, Sept. 2023, pp. 128-34, doi:10.37251/isej.v4i3.731.