Khofifah U, Ratnasari J, Juhanda A. Analisis Butir Soal Kemampuan Tree Thinking Pada Instrumen Uji Coba Materi Spermathophyta: (Analysis of tree thinking ability problem ability in spermathophyta trial material instruments). Biodik [Internet]. 2020Oct.9 [cited 2024Nov.25];6(3):332-4. Available from: https://online-journal.unja.ac.id/biodik/article/view/9907