Wicaksana, B. I. A., and E. Suparti. “Optimization of Production Amount Using Newsboy Model and Raw Material Control Planning Using Material Requirement Planning (MRP)”. PROZIMA (Productivity, Optimization and Manufacturing System Engineering), Vol. 2, no. 2, Dec. 2018, pp. 88-99, doi:10.21070/prozima.v2i1.1918.