Dyfyniad APA

(2001). world almanac and book of facts. Funk & Wagnalls.

Dyfyniad Arddull Chicago

World Almanac and Book of Facts. New Jersey: Funk & Wagnalls, 2001.

Dyfyniad MLA

World Almanac and Book of Facts. Funk & Wagnalls, 2001.

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