APA
Zaelke D., Orbuch P., Housman R. F. (. & Centre for International Environmental Law. (1993). Trade and the environment: law, economics and policy. Washington: Island Pr.
Chicago
Zaelke Durwood, Orbuch Paul, Housman Robert F (eds) and Centre for International Environmental Law. 1993. Trade and the environment: law, economics and policy. Washington: Island Pr.
Harvard
Zaelke D., Orbuch P., Housman R. F. (. and Centre for International Environmental Law. (1993). Trade and the environment: law, economics and policy. Washington: Island Pr.
MLA
Zaelke Durwood, Orbuch Paul, Housman Robert F (eds) and Centre for International Environmental Law. Trade and the environment: law, economics and policy. Washington: Island Pr. 1993.