Asaduzzaman, M., M.S. Jahan, M.R. Mondol, M.A. Islam, and A.K. Sarkar. 2005. “Efficacy of Different Commercial Vitamin - Mineral Premixes on Productive Performance of Caged Laying Pullets”. International Journal of Poultry Science 4 (8): 589–595. https://doi.org/10.3923/ijps.2005.589.595.