Untu, V. N., and M. V. Tielung. “MARKETING MIX EFFECT ON CUSTOMER SATISFACTION ON THE TOURISM IN TOMOHON CITY”. International Journal of Research -GRANTHAALAYAH, vol. 9, no. 1, Jan. 2021, pp. 25-36, doi:10.29121/granthaalayah.v9.i1.2021.2870.