Lewis, N. (1964). The New Roget's Thesaurus of the English language in Dictionary form (Library ed.). G.P. Putnam's.
Dyfyniad Arddull ChicagoLewis, Norman. The New Roget's Thesaurus of the English Language in Dictionary Form. Library ed. New York: G.P. Putnam's, 1964.
Dyfyniad MLALewis, Norman. The New Roget's Thesaurus of the English Language in Dictionary Form. Library ed. G.P. Putnam's, 1964.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.