Sari, Vina Winda. 2020. “The Process of Determining Import Duty and PDRI on Passenger Carry-Ons at Kuala Namu International Airport: The Process of Determining Import Duty and PDRI on Passenger Carry-Ons at Kuala Namu International Airport”. Jurnal Mantik 3 (4):634-41. https://doi.org/10.35335/mantik.Vol3.2020.883.pp634-641.