National Lexicographic Board & Roget, P. M. (1982). The New American Roget's college thesaurus in dictionary form (Encyclopedic edition.). Grosset & Dunlap.
Dyfyniad Arddull ChicagoNational Lexicographic Board and Peter Mark Roget. The New American Roget's College Thesaurus in Dictionary Form. Encyclopedic edition. New York: Grosset & Dunlap, 1982.
Dyfyniad MLANational Lexicographic Board and Peter Mark Roget. The New American Roget's College Thesaurus in Dictionary Form. Encyclopedic edition. Grosset & Dunlap, 1982.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.