Roland Y.H. Silitonga, Ivena Jane Budiyono and Christine C. Bautista 2022. Development of a Multi-Item Inventory Model by Considering Perishable and Return of Goods in a Hospital Pharmacy. Journal of Novel Engineering Science and Technology. 1, 01 (Aug. 2022), 9–14. DOI:https://doi.org/10.56741/jnest.v1i01.55.