Quirk, R., & Greenbaum, S. (1974). A university grammar of English: Workbook. London: Longman Group Limited.
Dyfyniad Arddull ChicagoQuirk, Randolph, và Sidney Greenbaum. A University Grammar of English: Workbook. London: Longman Group Limited, 1974.
Dyfyniad MLAQuirk, Randolph, và Sidney Greenbaum. A University Grammar of English: Workbook. London: Longman Group Limited, 1974.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.