Ashar Prima, Heny Suseani Pangastut, Sri Setiyarini, and Christantie Effendy. “The Effectiveness of Foot Reflexology Massage in Reducing Cortisol Saliva Levels As a Biomarker of Stress for Patients With Cancer”. International Journal of Research in Pharmaceutical Sciences, vol. 11, no. 4, Dec. 2020, pp. 7577-84, https://ijrps.com/home/article/view/2351.