Mutianingsih, Ninik, and Lydia Prayitno. 2022. “Kegagalan RZ Memecahkan Ill-Structured Problem Persegi Panjang”. Jurnal Cendekia : Jurnal Pendidikan Matematika 6 (3), 3167-79. https://doi.org/10.31004/cendekia.v6i3.1091.