Bangladesh Rice Research Institute & Ahmed,Nizam U. Farming Systems Research at Kamalgonj 1989 and 1990. Bangladesh Rice Research Institute.
Chicago-viite (17. p.)Bangladesh Rice Research Institute ja Ahmed,Nizam U. Farming Systems Research at Kamalgonj 1989 and 1990. Bangladesh: Bangladesh Rice Research Institute.
MLA-viite (8. p.)Bangladesh Rice Research Institute ja Ahmed,Nizam U. Farming Systems Research at Kamalgonj 1989 and 1990. Bangladesh Rice Research Institute.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.