Jusman, S., and S. Maryati. “The Determinant of Consumer Surplus for Tourist in Belakang Padang Island, Batam City, Riau Islands Province ”. Daengku: Journal of Humanities and Social Sciences Innovation, Vol. 5, no. 2, Mar. 2025, pp. 257-63, doi:10.35877/454RI.daengku3806.