Ulilalbab, A., B. Wiratmadi, and M. Adriani. “Purple Rosella (Hibiscus Sabdariffa Linn.) Petal Extract Prevents Hepatocyte Degeneration in Wistar Rats Exposed to Cigarette Smoke”. Folia Medica Indonesiana, vol. 54, no. 2, July 2018, pp. 96-101, doi:10.20473/fmi.v54i2.8857.