Parlina, N. 2017. Function Forecasting Sales of Row Materials with Least Square Method (Study Case PD Surabraja Jamblang, West Java Indonesia). JURISMA : Jurnal Riset Bisnis & Manajemen. 6, 2 (Nov. 2017). DOI:https://doi.org/10.34010/jurisma.v6i2.432.