Não informado. (2001). Annual Report of the Bureau of Agriculture. Bureau of Agriculture.
Chicago-referens (17:e uppl.)Não informado. Annual Report of the Bureau of Agriculture. Manila: Bureau of Agriculture, 2001.
MLA-referens (8:e uppl.)Não informado. Annual Report of the Bureau of Agriculture. Bureau of Agriculture, 2001.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.