Siregar, Fitri Dona, et al. “The Effect of Soft Drink Consumption on PH in Stimulated and Unstimulated Saliva : Quasi Experimental With Post-Test Only Comparison Group”. Journal Research of Social Science, Economics, and Management, vol. 5, no. 5, Dec. 2025, pp. 9414-22, doi:10.59141/jrssem.v5i5.1263.