Dyfyniad APA

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

Dyfyniad Arddull Chicago

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

Dyfyniad MLA

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

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.