Safratilofa, S., S. Syahrizal, E. B. Kholidin, and K. A. Sardani. “The Effect of Green Betel Leave Extract (Piper Betlel) in Feed As Prevention of Edwardsiella Ictaluri Bacterial Infection in Catfish (Pangasianodon Hypopthalmus)”. IJOTA (Indonesian Journal of Tropical Aquatic), vol. 4, no. 2, Feb. 2022, pp. 22-28, doi:10.22219/ijota.v4i2.18082.