Talvj. (1871). Fifteen years: A picture from the last century. Appleton.
Dyfyniad Arddull ChicagoTalvj. Fifteen Years: A Picture from the Last Century. New York: Appleton, 1871.
Dyfyniad MLATalvj. Fifteen Years: A Picture from the Last Century. Appleton, 1871.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.