Anwar, Farooq, Amer Jamil, Shahid Iqbal, and Munir A. Sheikh. 2006. “Antioxidant Activity of Various Plant Extracts under Ambient and Accelerated Storage of Sunflower Oil”. Grasas Y Aceites 57 (2):189-97. https://doi.org/10.3989/gya.2006.v57.i2.36.