1. The Cambridge encyclopedia of language Crystal, David, 1941- Cambridge ; Cambridge University Press, 2010. ENG140 ENG103 ENG160
2. A dictionary of linguistics and phonetics Crystal, David, 1941-, Hoboken, New Jersey : Wiley & Sons, Inc, [2024]. ENG202 ENG103 ENG381
3. How language works: how babies babble, words change meaning, and languages live or die Crystal, David, 1941- New York, N.Y. : Avery, 2007. ENG103