A. M. . Muzhaffar, I. S. . Hamid, M. H. . Effendi, P. A. . Wibawati, M. . Sukmanadi, and R. . Solfaine, “Duodenum Histomorphology of Bacillus subtilis and Bacillus coagulan Isolate in Laying Hen Strain Isa Brown”, JBMV, vol. 12, no. 2, pp. 57–61, Dec. 2023.