Não informado. (1963). Agricultural Science Review. Cooperative State Experiment Station Service, Department of Agriculture.
Chicago-viite (17. p.)Não informado. Agricultural Science Review. Washington: Cooperative State Experiment Station Service, Department of Agriculture, 1963.
MLA-viite (8. p.)Não informado. Agricultural Science Review. Cooperative State Experiment Station Service, Department of Agriculture, 1963.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.