Alam, S. M., M. A. U. Syed Ishtiaq Haider, N. N. N. Syeda Sana Aamir, and I. A. Mahmood. “Effect of Farm Yard Manure and Planting Densities on Growth, Yield and Quality of Okra under Natural Farming”. Horticultural Biotechnology Research, vol. 5, Apr. 2019, pp. 14-16, doi:10.25081/hbr.2019.v5.5500.