Djanas, V. B., Fatimawali, and Elly Suoth. “FINGERPRINT ANALYSIS OF BETEL (Piper Betle L.) AS RAW MATERIALS OF TRADITIONAL MEDICINE USING FTIR SPECTROSCOPE”. PHARMACON, vol. 12, no. 2, May 2023, pp. 193-8, doi:10.35799/pha.12.2023.40599.