Firdaus, Rizal Faturrohman, et al. “The Effect of Giving Bitter Leaf (Vernonia Amygdalina) Flour in Ration on the Hematological Profiles in Laying Hens Rejection Phase”. Holistic: Journal of Tropical Agriculture Sciences, vol. 3, no. 1, July 2025, pp. 79-94, doi:10.61511/hjtas.v3i1.2025.2153.