(1974). Conference proceedings: Present state of value theory. Popular Prakashan.
Dyfyniad Arddull ChicagoConference Proceedings: Present State of Value Theory. Bombay: Popular Prakashan, 1974.
Dyfyniad MLAConference Proceedings: Present State of Value Theory. Popular Prakashan, 1974.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.