Manish Kapoor. “Phytochemical Screening for Antimicrobial and Antioxidant Activity of Periwinkle”. Indian Journal of Horticulture 78, no. 4 (May 16, 2023): 428–435. Accessed April 21, 2026. https://www.journal.iahs.org.in/index.php/ijh/article/view/725.