By Collins Dictionaries
By Val Brooks
By CGP Books
By Bradfield, Philip, Dodds, Judy, Taylor, Norma
By Collins GCSE
By Jackson, Eugene; Rubio, Antonio
By CGP Books, CGP Books
By Su Nicholson, Russell Timmins, Greg Byrd
By Colin Chambers, Stephen Whittleton, Geoffrey Hallas, Andrew Maczek, David Nicholls
By John Visser (University of Northampton, UK), Graham Upton
By Graham Upton
By Mackean, D. G., D. G. Mackean
By Gilmore, G.N.
By Paton, Alan
By Educational Experts
By Severine Capjon, Stuart Glover, Amandine Moores, Robert Pike
By John Sproule