?url_ver=Z39.88-2004&rft_id=10.5897%2FJDAE2017.0833&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aufirst=R+K&rft.au=Aloyce%2C+R+K&rft.aulast=Aloyce&rft.atitle=Economic+profitability+and+risk+analyses+of+improved+sorghum+varieties+in+Tanzania&rft.title=Journal+of+Development+and+Agricultural+Economics&rft.issn=2006-9774&rft.date=30+September+2017&rft.volume=9&rft.pages=250-268&rft.issue=9&rft.genre=article