United States. Central Intelligence Agency. (1992). Handbook of the nations: A brief guide to the economy, government, land, demographics, communications, transportation systems, and national defense establishment of each of 264 entities of the world (12th ed.). Gale Research.
Chicago-viite (17. p.)United States. Central Intelligence Agency. Handbook of the Nations: A Brief Guide to the Economy, Government, Land, Demographics, Communications, Transportation Systems, and National Defense Establishment of Each of 264 Entities of the World. 12th ed. Detroit, Mich: Gale Research, 1992.
MLA-viite (9. p.)United States. Central Intelligence Agency. Handbook of the Nations: A Brief Guide to the Economy, Government, Land, Demographics, Communications, Transportation Systems, and National Defense Establishment of Each of 264 Entities of the World. 12th ed. Gale Research, 1992.