Philippines. Bureau of Agricultural Statistics. (2010). Producer price index for agriculture 2007-2009. Bureau of Agricultural Statistics.
Chicago-referens (17:e uppl.)Philippines. Bureau of Agricultural Statistics. Producer Price Index for Agriculture 2007-2009. Quezon City: Bureau of Agricultural Statistics, 2010.
MLA-referens (9:e uppl.)Philippines. Bureau of Agricultural Statistics. Producer Price Index for Agriculture 2007-2009. Bureau of Agricultural Statistics, 2010.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.