Ramda, Apolonia Hendrice, Rully Charitas Indra Prahmana, Hildegardis Mulu, and Bedilius Gunur. 2018. “Kemampuan Konservasi Panjang Pada Siswa Usia 6-7”. Jurnal Gantang 3 (2):109-16. https://doi.org/10.31629/jg.v3i2.480.