Putra, Levi Kusuma, Zakaria Wahab, Marlina Widiyanti, and Muchsin Saggaf Shihab. “The Effect of Word of Mouth, Brand Image, and Online Advertising on Purchase Decisions Using Grab-Food Services”. International journal of life sciences 5, no. 2 (July 21, 2021): 76–84. Accessed December 29, 2025. http://sciencescholar.us/journal/index.php/ijls/article/view/1390.