Trihastuti, M., A. Abdulkarim, E. Danial, and A. Supriadi. “Learning Strategy for Students’ Entrepreneurial Spirit through Students’ Cooperation (KOPMA)”. Jurnal Iqra’ : Kajian Ilmu Pendidikan, vol. 5, no. 2, Dec. 2020, pp. 83-94, doi:10.25217/ji.v5i2.855.