APA
Blake R., . (1981). Aiding the environment: a study of the environmental policies procedures and performance of the U.S. agency for international development. Washington-US: United States Agency for International Development.
Chicago
Blake R.O, . 1981. Aiding the environment: a study of the environmental policies procedures and performance of the U.S. agency for international development. Washington-US: United States Agency for International Development.
Harvard
Blake R., . (1981). Aiding the environment: a study of the environmental policies procedures and performance of the U.S. agency for international development. Washington-US: United States Agency for International Development.
MLA
Blake R.O, . Aiding the environment: a study of the environmental policies procedures and performance of the U.S. agency for international development. Washington-US: United States Agency for International Development. 1981.