Hayati, R., M. . Irman, and L. N. . Agia. “Sell in May and Go Away or Just Another January Effect? Studied of Anomaly in Indonesia Stock Exchange”. International Journal of Economics Development Research (IJEDR), vol. 1, no. 1, Jan. 2020, pp. 45-56, doi:10.37385/ijedr.v1i1.27.