(1)
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 2020, 6, 328-335.