Iksen, et al. “In Vitro Test of Anticalculi Effect from Ethyl Acetate Fraction of Chives Leaf (Allium Schoenoprasum L.)”. Indonesian Journal of Pharmaceutical and Clinical Research, vol. 2, no. 2, Dec. 2019, pp. 20-23, doi:10.32734/idjpcr.v2i2.3030.