Khofifah, U., Ratnasari, J. and Juhanda, A. (2020) “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, 6(3), pp. 328-335. doi: 10.22437/bio.v6i3.9907.