Sulistiani, Silvia, et al. “PENGARUH BERKUMUR DAUN UNGU (Graptophylum Pictum L. Griff) TERHADAP PH SALIVA RONGGA MULUT”. Jurnal Kesehatan, vol. 14, no. 2, Dec. 2023, pp. 109-16, doi:10.38165/jk.v14i2.378.