Sibua, Ismul, et al. “Analysis of Compressive Strength Test Characteristics of Concrete Using Fine Aggregates from Joubela Village and Coarse Aggregates from Sabala Village”. JURNAL BIOSAINSTEK, vol. 8, no. 2, July 2026, pp. 60-71, doi:10.52046/biosainstek.v8i2.2794.