N. A. M. Salehan, A. Naila, A. Ajita, and A. Z. Sulaiman, “Effect of Solid to Water Ratio, Time and Temperature on Aqueous Extraction of Gallic Acid from Labisia pumila var alata of Malaysia: Gallic acid from Labisia pumila”, Pakistan Journal of Scientific & Industrial Research, vol. 63, no. 2, pp. 93–99, Jul. 2020.