Roberts, S., & Conway, A. (1961). The Welsh in America: Letters from the immigrants. University of Minnesota Press.
Dyfyniad Arddull ChicagoRoberts, Sarah, and Alan Conway. The Welsh in America: Letters from the Immigrants. Minneapolis: University of Minnesota Press, 1961.
Dyfyniad MLARoberts, Sarah, and Alan Conway. The Welsh in America: Letters from the Immigrants. University of Minnesota Press, 1961.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.