APA引文

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

Chicago Style Citation

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

MLA引文

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

警告:这些引文格式不一定是100%准确.