Langan, J. (2001). Sentence skills with readings (2nd ed.). Boston: McGraw-Hill.
Dyfyniad Arddull ChicagoLangan, John. Sentence Skills With Readings. 2nd ed. Boston: McGraw-Hill, 2001.
Dyfyniad MLALangan, John. Sentence Skills With Readings. 2nd ed. Boston: McGraw-Hill, 2001.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.