“Comparative Evaluation of Pharmacognostic Characteristics, Phytochemical Composition, and Antioxidant Potential of Cosmos sulphureus Cav. and Calendula officinalis L.: A Critical Narrative Review on Flower Colour and Quality Standardisation” (2026) International Journal of Pharmaceutical Research and Medicinal Plants, 2(5), pp. 01–11. doi:10.61280/m6kvm371.