Sukarman Purba, et al. “Meta Analisis Pengaruh Model Pembelajaran Berbasis Projek (Project Based Learning) Terhadap Hasil Belajar Siswa”. Gudang Jurnal Multidisiplin Ilmu, vol. 2, no. 6, June 2024, pp. 169-74, doi:10.59435/gjmi.v2i6.506.