Simangunsong, A. “ANALYSIS OF APPLICATION OF TECHNIQUE FOR ORDER PREFERENCE BY SIMILLARITY TO IDEAL SOLUTION IN SELECTING ENERGY SAVE ELECTRICAL LIGHTS BALL FOR HOUSEHOLD: ANALYSIS OF APPLICATION OF TECHNIQUE FOR ORDER PREFERENCE BY SIMILLARITY TO IDEAL SOLUTION IN SELECTING ENERGY SAVE ELECTRICAL LIGHTS BALL FOR HOUSEHOLD”. Jurnal Mantik, vol. 3, no. 4, Feb. 2020, pp. 788-94, https://iocscience.org/ejournal/index.php/mantik/article/view/838.