APA citiranje

Hetzel, N. K. (1980). Environmental cooperation among industrialized countries: The role of regional organizations. University press of America.

Chicago Edition Citation

Hetzel, Nancy K. Environmental Cooperation Among Industrialized Countries: The Role of Regional Organizations. USA: University press of America, 1980.

MLA citiranje

Hetzel, Nancy K. Environmental Cooperation Among Industrialized Countries: The Role of Regional Organizations. University press of America, 1980.