Murwani , Retno. “Effect of MOS, Baker Yeast, or Noni Leaves Extracts on Antibody Titers to NDV and AI Vaccine of Broilers Fed Corn-Mungbean Base Diets”. International Journal of Poultry Science, vol. 9, no. 9, Aug. 2010, pp. 890–894, https://doi.org/10.3923/ijps.2010.890.894.