Hendarto, K. A. “The Implementation of Corporate Social Responsibility (CSR) in Central Java Earthquake: A Preliminary Study on Consumer Belief, Attitude, and Purchase Intention”. Gadjah Mada International Journal of Business, Vol. 11, no. 3, Sept. 2009, pp. 409 -41, https://journal.ugm.ac.id/v3/gamaijb/article/view/15046.