Dyfyniad APA

Tim harford. (2017). Fifty Things That Made the Modern Economy. Little Brown.

Dyfyniad Arddull Chicago

Tim harford. Fifty Things That Made the Modern Economy. UK: Little Brown, 2017.

Dyfyniad MLA

Tim harford. Fifty Things That Made the Modern Economy. Little Brown, 2017.

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