(1989). Political handbook of the world 1989: Goverments and intergovermental organizations as of March 15, 1989 (with major political developments noted through july 15, 1989). New York: CSA.
Dyfyniad Arddull ChicagoPolitical Handbook of the World 1989: Goverments and Intergovermental Organizations As of March 15, 1989 (with Major Political Developments Noted Through July 15, 1989). New York: CSA, 1989.
Dyfyniad MLAPolitical Handbook of the World 1989: Goverments and Intergovermental Organizations As of March 15, 1989 (with Major Political Developments Noted Through July 15, 1989). New York: CSA, 1989.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.