Kharimah, Ilmi, 		Sugiarti, Titik, 		Susanto, Susanto, 		Setiawan, Toto, 		Pambudi, Didik, AND 		Triningsih, Tutut.
" Proses Berpikir Siswa SMA Level Deduksi Informal dalam Menyelesaikan Soal Dimensi Tiga menurut Tahapan Wallas" <em>Journal of Mathematics Education and Learning</em> [Online], Volume 1 Number 2 (9 July 2021)