Tingley, K. A. W. The New century. New Century Corp.
Dyfyniad Arddull ChicagoTingley, Katherine Augusta Westcott. The New Century. New York: New Century Corp.
Dyfyniad MLATingley, Katherine Augusta Westcott. The New Century. New Century Corp.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.