The U.S. Department of State fact book of the countries of the world.
Introd. by Gene Gurney.

APA Citation

United States. Dept. of State. (1970). The U.S. Department of State fact book of the countries of the world. New York: Crown.

MLA Citation

United States. Dept. of State. The U.S. Department of State Fact Book of the Countries of the World. New York: Crown, 1970.

Warning: These citations may not always be complete (especially for serials).