MANIKANTA Y, et al. “In Vitro Antibacterial and Antioxidant Activities of Betel Leaf Mediated Synthesized Silver Nanoparticles”. International Journal of Pharma and Bio Sciences, vol. 8, no. 3, Sept. 2017, pp. 383-90, doi:10.22376/ijpbs.2017.8.3.p383-390.