Dyfyniad APA

Nobbs, J. (1973). Economics for advanced level. M.C. Graw hill.

Dyfyniad Arddull Chicago

Nobbs, J.P.Jacks. Economics for Advanced Level. London: M.C. Graw hill, 1973.

Dyfyniad MLA

Nobbs, J.P.Jacks. Economics for Advanced Level. M.C. Graw hill, 1973.

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