Dyfyniad APA

Red. Newspaper Enterprise Association, I. (1978). The World Almanac and Book of Facts 1979. Newspaper Enterprise Association, Inc.

Dyfyniad Arddull Chicago

Red. Newspaper Enterprise Association, Inc. The World Almanac and Book of Facts 1979. Newspaper Enterprise Association, Inc, 1978.

Dyfyniad MLA

Red. Newspaper Enterprise Association, Inc. The World Almanac and Book of Facts 1979. Newspaper Enterprise Association, Inc, 1978.

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