Guevarra, J. A. S., Perez, A. M. Y., & Rosete, M. A. L. (2023). Impact of Tourism in Intramuros on the Economic Development of the City of Manila. International Journal of Research in Engineering, Science and Management, 6(12), 126-134. https://journal.ijresm.com/index.php/ijresm/article/view/2888