Suarniati NW, Ardhana IW, Hidayah N, Handarini DM. The Difference between the Effects of Problembased Learning Strategy and Conventional Strategy on Vocational School Students’ Critical Thinking Skills in Civic Education. IJLTER [Internet]. 2019 Aug. 30 [cited 2026 Jul. 27];18(8):155-67. Available from: http://www.ijlter.myres.net/index.php/ijlter/article/view/527