APA
Vail D., Hasund K. P. & Drake L. (1994). The greening of agricultural policy in industrial societies. Ithaca: Cornell Uni Pr.
Chicago
Vail David, Hasund Knut Per and Drake Lars. 1994. The greening of agricultural policy in industrial societies. Ithaca: Cornell Uni Pr.
Harvard
Vail D., Hasund K. P. and Drake L. (1994). The greening of agricultural policy in industrial societies. Ithaca: Cornell Uni Pr.
MLA
Vail David, Hasund Knut Per and Drake Lars. The greening of agricultural policy in industrial societies. Ithaca: Cornell Uni Pr. 1994.