Duncan, H. D. (1969). Symbols and social theory. Oxford University Press.
Dyfyniad Arddull ChicagoDuncan, Hugh Dalziel. Symbols and Social Theory. New York: Oxford University Press, 1969.
Dyfyniad MLADuncan, Hugh Dalziel. Symbols and Social Theory. Oxford University Press, 1969.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.