Dian Hanif, Yudha Pradana, Sudarmiatin Sudarmiatin, and Ita Prihatining Wilujeng. 2025. “The Analysis of the Application of 7Ps in Improving the Lambau Semboro Jember Billiards Service Business”. Harmoni Economics: International Journal of Economics and Accounting 2 (4):152-57. https://doi.org/10.70062/harmonieconomics.v2i4.356.