P. Lembono, C. T. Mulyanto, M. Michelle, and Y. G. Kurniawan, “The Effects of Brewing Condition on Tea’s Caffeine Content and Sensory Quality”, J. Mutu Pangan, vol. 13, no. 1, pp. 31–38, Apr. 2026, doi: 10.29244/jmpi.2026.13.1.31.