Ritson, C., & Harvey, D. (1997). The common agricultural policy (2nd ed.). CAB International.
Citazione stile Chigago Style (17a edizione)Ritson, Christopher, e David Harvey. The Common Agricultural Policy. 2nd ed. New York, NY: CAB International, 1997.
Citatione MLA (9a ed.)Ritson, Christopher, e David Harvey. The Common Agricultural Policy. 2nd ed. CAB International, 1997.