Dyfyniad APA

Richard; Stone, G. (1961). National income and expenditure.

Dyfyniad Arddull Chicago

Richard; Stone, Giovanna. National Income and Expenditure. Bowes & Bowes, London, 1961.

Dyfyniad MLA

Richard; Stone, Giovanna. National Income and Expenditure. 1961.

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