Quirk, R. (1995). Grammatical and lexical variance in English. Longman.
Dyfyniad Arddull ChicagoQuirk, Randolph. Grammatical and Lexical Variance in English. London: Longman, 1995.
Dyfyniad MLAQuirk, Randolph. Grammatical and Lexical Variance in English. Longman, 1995.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.