Cita APA (7th ed.)

David, C. C. (2000). Changing patterns of agricultural protection and trade. Philippine institute for Development Studies/Bureau of Agricultural Research.

Cita Chicago (17th ed.)

David, Cristina C. Changing Patterns of Agricultural Protection and Trade. Makati: Philippine institute for Development Studies/Bureau of Agricultural Research, 2000.

Cita MLA (9th ed.)

David, Cristina C. Changing Patterns of Agricultural Protection and Trade. Philippine institute for Development Studies/Bureau of Agricultural Research, 2000.