Fasy, S. V. (1990). One century and onward. Cooke Pub..
Dyfyniad Arddull ChicagoFasy, Sam V. One Century and Onward. [Devon, Pa.: Cooke Pub., 1990.
Dyfyniad MLAFasy, Sam V. One Century and Onward. Cooke Pub., 1990.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.