Roget, P. M. (1987). Roget's thesaurus of english words and phrases. Bloomsbury.
Dyfyniad Arddull ChicagoRoget, Peter Mark. Roget's Thesaurus of English Words and Phrases. New York: Bloomsbury, 1987.
Dyfyniad MLARoget, Peter Mark. Roget's Thesaurus of English Words and Phrases. Bloomsbury, 1987.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.