Dyfyniad APA

O' Brien, D. P. (1970). J.R. McCulloch; A Study in Classical Economics. George Allen & Unwin.

Dyfyniad Arddull Chicago

O' Brien, D P. J.R. McCulloch; A Study in Classical Economics. London: George Allen & Unwin, 1970.

Dyfyniad MLA

O' Brien, D P. J.R. McCulloch; A Study in Classical Economics. George Allen & Unwin, 1970.

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