Anggraeny, A., Mochzen Gito Resmi and Syariful Alam 2022. Designing a mobile sales application at Setra farma pharmacy in the era of the covid-19 using the goal-directed desing method. Jurnal Mantik. 6, 3 (Sep. 2022), 2759-2769. DOI:https://doi.org/10.35335/mantik.v6i3.2780.