M. Sari, C. Surbakti, T. N. Khairani, Willy Novita Sari, and G. S. . Nasution, “Toxicity Test of Catharanthus roseus Flower Extract with Brine Shrimp Lethality Test Method ”, IJSE, vol. 2, no. 1, pp. 24–32, Feb. 2022.