Royal economic society. (1891). Economic journal. Royal economic society.
Dyfyniad Arddull ChicagoRoyal economic society. Economic Journal. London: Royal economic society, 1891.
Dyfyniad MLARoyal economic society. Economic Journal. Royal economic society, 1891.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.