Kurniyanto, Kurniyanto, Joko Suwignyo, & Fahmi Fatra. " PENINGKATAN HASIL BELAJAR MENGUKUR STAND DENGAN JANGKA SORONG MELALUI PENDEKATAN PROBLEM BASED LEARNING." Prosiding Seminar Nasional & Internasional EDUSTEM [Online], (2024): 188-196. Web. 2 Jul. 2025