(1967). 50 facts about Britain's economy. London: Sanders Phillips & Co.
Dyfyniad Arddull Chicago50 Facts About Britain's Economy. London: Sanders Phillips & Co, 1967.
Dyfyniad MLA50 Facts About Britain's Economy. London: Sanders Phillips & Co, 1967.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.