Dyfyniad APA

Davidson,Greg, & Paul,Davidson. (1988). Economics for a civilized society (2.). MacMillan.

Dyfyniad Arddull Chicago

Davidson,Greg, and Paul,Davidson. Economics for a Civilized Society. 2. London: MacMillan, 1988.

Dyfyniad MLA

Davidson,Greg, and Paul,Davidson. Economics for a Civilized Society. 2. MacMillan, 1988.

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