2026. The Effect of Project-Based Learning (PjBL) on Student Motivation and Cooperative Attitudes. Buana Pendidikan: Jurnal Fakultas Keguruan dan Ilmu Pendidikan Unipa Surabaya. 22, 1 (Feb. 2026), 71–77. DOI:https://doi.org/10.36456/bp.vol22.no1.a10681.