Gungor, Serife Selma Uras, et al. “Composition and Content of Total Phenolics and Flavonoids, and Antioxidant Activity of Trigonella Isthmocarpa”. European Journal of Chemistry, vol. 4, no. 1, Mar. 2013, pp. 7-9, doi:10.5155/eurjchem.4.1.7-9.719.