Andriyaningtiyas, Y., D. G. Tamtomo, and B. Murti. “Theory of Planned Behavior and Social Cognitive Theory on the Effect of the Community Health Center Tertiary Preventive Behavior Among Patients With Type 2 Diabetes Mellitus: A Multilevel Analysis”. Journal of Health Promotion and Behavior, vol. 5, no. 1, Jan. 2020, pp. 59-71, https://thejhpb.com/index.php/thejhpb/article/view/242.