NAINGGOLAN, D. R. M.; SUDARMAN, S.; SUBAGIO, N. Application of LKPD Social Studies Based Collaborative Learning Model Structured Problem Solving Type in Improving the Completeness of Class VII Students’ Learning Outcomes at SMP Negeri 1 Tenggarong Seberang. Educational Studies: Conference Series, v. 2, n. 2, p. 307-317, 31 Dec. 2022.