Roget, P. M. (1988). Roget's thesaurus of English words and phrases. London; Ringwood, Vic.: Penguin Books.
Dyfyniad Arddull ChicagoRoget, Peter Mark. Roget's Thesaurus of English Words and Phrases. London; Ringwood, Vic.: Penguin Books, 1988.
Dyfyniad MLARoget, Peter Mark. Roget's Thesaurus of English Words and Phrases. London; Ringwood, Vic.: Penguin Books, 1988.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.