Sunarti, Dwi Ninik, et al. “The Effect of Collaborative Project-Based Learning on Students’ Communication Skills at SMP Negeri 4 Palu”. Bioscientist : Jurnal Ilmiah Biologi, vol. 14, no. 3, Aug. 2026, pp. 1143-55, doi:10.33394/bioscientist.v14i3.20867.