Melati, Ina, Teddy Indira Budiwan, and Haryadi Sarjono. 2018. “The Influence of Celebrity Endorsement on Consumer’s Attitude: A Study Case of Smartphone Brands in Jakarta, Indonesia”. International Journal of Engineering & Technology 7 (4.4): 30-32. https://doi.org/10.14419/ijet.v7i4.4.19602.