Yuliana, R., Daulay, A.S., Ridwanto, R. and Rahman, F. 2023. Determination Of Total Alkaloid Content Of Yellow Wood (Arcangelisia flava (L.) Merr) Extract Based On Differences In Ethanol Concentration Using Uv-Vis Spectrophotometry Method. Indonesian Journal of Science and Pharmacy. 1, 2 (Dec. 2023), 42–49.