Ai Rian Julyanti and Sri Rahayu Dwi Purnaningtyas, “Specific Standardization and Determination of Curcuminoid Levels in Turmeric (Curcuma longa) Rhizomes from Three Cultivation Centers in Java Using the HPLC Method”, J.Farmasi, vol. 2, no. 2, pp. 50–63, Oct. 2026.