A.G. Mugunthakumar, K. Nandhini, and S. Nandhini. 2018. “An Empirical Study on Reason for Unhappiness in Human Life With Refrence to Erode”. International Journal of Intellectual Advancements and Research in Engineering Computations 6 (2):1023-26. https://ijiarec.com/ijiarec/article/view/599.