David, C. C. (2000). Changing patterns of agricultural protection and trade. Philippine institute for Development Studies/Bureau of Agricultural Research.
Citazione stile Chigago Style (17a edizione)David, Cristina C. Changing Patterns of Agricultural Protection and Trade. Makati: Philippine institute for Development Studies/Bureau of Agricultural Research, 2000.
Citatione MLA (9a ed.)David, Cristina C. Changing Patterns of Agricultural Protection and Trade. Philippine institute for Development Studies/Bureau of Agricultural Research, 2000.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.