Putri Sherlyanti, A., Marselina, and V. Tri Purwaningsih. “The Effect Of Physical Capital Accumulation, Human Capital And ICT Development Index On Labor Productivity In Indonesia As A Middle Income Trap Country”. International Journal of Economics, Business and Innovation Research, Vol. 5, no. 03, May 2026, pp. 2951-70, doi:10.63922/ijebir.v5i03.3822.