Sonya. “the The Influence of the Speed of Delivery of Goods and Prices on Increasing the Use of Delivery Services of PT Tri Adi Bersama (Anteraja) During the Covid-19 Pandemic ”. Jurnal Pendidikan Nusantara 2, no. 2 (February 15, 2022): 9-13. Accessed April 20, 2024. http://e-journal.stkipnutegal.ac.id/index.php/jpnu/article/view/43.