Collins, R. (1998). The discovery of society. McGraw-Hill.
Dyfyniad Arddull ChicagoCollins, Randall. The Discovery of Society. McGraw-Hill, 1998.
Dyfyniad MLACollins, Randall. The Discovery of Society. McGraw-Hill, 1998.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.