John Langan. (2005). College writing skills with readings / John Langan. McGraw-Hill.
Dyfyniad Arddull ChicagoJohn Langan. College Writing Skills With Readings / John Langan. McGraw-Hill, 2005.
Dyfyniad MLAJohn Langan. College Writing Skills With Readings / John Langan. McGraw-Hill, 2005.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.