1. Farnsworth N, Akerele O, Bingel A, Soejarto D, Guo Z: Medicinal plants in therapy. Bull WHO. 1985, 63 (6): 965-981.
2. Sharma R: Medicinal plants of India-An encyclopedia. Daya Publishing House, 110035 Delhi, India. 2003, 46-47.
3. Foster S, James AD: A field guide to medicinal plants: Eastern and central North America. Peterson Field Guide Series, 2nd edition, Houghton Mifflin Park Avenue, New York 10003. 1990, 241-
4. Chevallier A: The encyclopedia of medicinal plants. Dorling Kindersley London. 1996, London: Andrew DK Publishing, 185-ISBN 9-780751-303148
5. Peng ZF, Strack D, Baumert A, Subramaniam R, Goh NK, Chia TF, Ngin Tan S, Chia LS: Antioxidant flavonoids from leaves of Polygonum hydropiper L. Phytochemistry. 2003, 62 (2): 219-228. 10.1016/S0031-9422(02)00504-6.