De Villiers, Anniza, and Mieke Faber. “Healthy Ageing: Is It Achievable?”. South African Journal of Clinical Nutrition 31, no. 3 (August 8, 2018): 4-5. Accessed May 7, 2024. http://sajcn.redbricklibrary.com/index.php/SAJCN/article/view/1343.