APA (7th ed.) Citation

(1982). Countries of the world and their leaders. Gale Research Company.

Chicago Style (17th ed.) Citation

Countries of the World and Their Leaders. Detroit, Mich: Gale Research Company, 1982.

MLA (9th ed.) Citation

Countries of the World and Their Leaders. Gale Research Company, 1982.

Warning: These citations may not always be 100% accurate.