Vera Ladeska, Vera dan Ema Dewanti, Ema dan Deviana Indah Sari, Deviana Pharmacognostical Studies and Determination of Total Flavonoids of Paitan (Tithonia diversifolia (Hemsl.) A. Gray. Pharmacognostical Studies and Determination of Total Flavonoids of Paitan (Tithonia diversifolia (Hemsl.) A. Gray.