APA引文

(2002). Countries of the world and their leaders yearbook, 2003. Gale Group.

Chicago Style (17th ed.) Citation

Countries of the World and Their Leaders Yearbook, 2003. Farmington Hills, Mich: Gale Group, 2002.

MLA引文

Countries of the World and Their Leaders Yearbook, 2003. Gale Group, 2002.