Febriyani, V., Rahman, N. and Ratman, R. (2019) “Determination of Calcium Level (Ca) and Iron (Fe) on Red and Green Spinaches at Parigi Moutong”, Jurnal Akademika Kimia. Palu, Sulawesi Tengah - INDONESIA, 8(4), pp. 230–235. doi: 10.22487/j24775185.2019.v8.i4.pp230-235.