Pransiska P, Amin A, Gumay OPU. The Effectiveness of Contextual based Textbooks on the Amount and Measurement Material of Class X Students of Tugumulyo Senior High School. KPEJ [Internet]. 2019 Dec. 18 [cited 2026 Apr. 22];2(2):82-8. Available from: https://journalfkipunipa.org/index.php/kpej/article/view/101