Abd Rashid, Nur Amira, Anggzas Sari Mohd Kassim, and 'Aisyah Mohamed Rehan. 2022. “Evaluation of Butterfly Pea Flowers for Antioxidant Activity and Its Potential As Antioxidant Soap ”. Progress in Engineering Application and Technology 3 (1): 64-73. https://publisher.uthm.edu.my/periodicals/index.php/peat/article/view/6265.