Patricia, V. M., and F. N. Saputri. “Phytochemical Screening and Determination of Total Phenolic and Total Flavonoid Contents of Pear Peel Extracts”. Farmasains : Jurnal Farmasi Dan Ilmu Kesehatan, vol. 4, no. 2, June 2020, pp. 33-37, doi:10.22219/farmasains.v4i2.10166.