Esuyawukal-Moges, K., and Z. Biruk-Masrie. “Growth and Yield Response of Shallot (Allium Cepa Var. Aggregatum) Varieties to Intra-Row Spacing in Eastern Amhara, Ethiopia”. Current Research in Agricultural Sciences, vol. 6, no. 2, Dec. 2019, pp. 157-68, doi:10.18488/journal.68.2019.62.157.168.