Ritson, C., & Harvey, D. (1997). The common agricultural policy (2nd ed.). CAB International.
Чикаго-гийн эшлэл (17 дахь хэвлэлт)Ritson, Christopher, ба David Harvey. The Common Agricultural Policy. 2nd ed. New York, NY: CAB International, 1997.
MLA -ийн эшлэл (9 дэх хэвлэлт)Ritson, Christopher, ба David Harvey. The Common Agricultural Policy. 2nd ed. CAB International, 1997.