Mollah, M. R. A., M. A. Ali, M. Ahmad, M. K. Hassan, and M. J. Alam. “Effect of Planting Dates on the Yield and Quality of True Seeds of Onion”. International Journal of Applied Sciences and Biotechnology, vol. 3, no. 1, Mar. 2015, pp. 67-72, doi:10.3126/ijasbt.v3i1.11847.