APA (7th ed.) Citation

(2006). Countries of the world and their leaders yearbook, 2007. Gale Group.

Chicago Style (17th ed.) Citation

Countries of the World and Their Leaders Yearbook, 2007. Farmington Hills, Mich: Gale Group, 2006.

MLA (9th ed.) Citation

Countries of the World and Their Leaders Yearbook, 2007. Gale Group, 2006.