Dyfyniad APA

Central statistical Office. (1972). Facts in focus. Penguin Books.

Dyfyniad Arddull Chicago

Central statistical Office. Facts in Focus. England: Penguin Books, 1972.

Dyfyniad MLA

Central statistical Office. Facts in Focus. Penguin Books, 1972.

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