G. Rusip, S. Ilyas, I. N. Lister, C. N. Ginting, A. I. Mukti, and E. Girsang, “Effects of Red-Fleshed Pitaya (Selenicereus polyrhizus) Ingestion after Strenuous Exercise on Creatine Kinase and Mitochondrial Function in Rat Muscle Cells”, Open Access Maced J Med Sci, vol. 10, no. A, pp. 680–684, Apr. 2022.