Hadmandho, T. C. “The Effect of Celebrity Instagram Endorsment on Impulsive Buying Behavior in Students in Rokan Hulu Regency, Riau Province”. Kontigensi : Jurnal Ilmiah Manajemen, Vol. 10, no. 2, Dec. 2022, pp. 208-16, doi:10.56457/jimk.v10i2.271.