Azzahra, S. “Influence of Negative Affect, Self Efficacy, Frugality Injunctive Norm on Consumer Guilt and Its Implications on Consumer Price Consciousness in E-Commerce”. Student Journal of Business and Management, vol. 7, no. 1, Apr. 2024, pp. 79-92, https://ejournal.unib.ac.id/sjbm/article/view/36323.