Lewis, R. E. Aspects of polysemy in the "Middle English Dictionary": Robert E. Lewis. Historical dictionaries and historical dictionary research : papers from the International Conference on Historical Lexicography and Lexicology, at the University of Leicester, 2002.(2004).

Lewis, Robert E. "Aspects of Polysemy in the "Middle English Dictionary": Robert E. Lewis." Historical Dictionaries and Historical Dictionary Research : Papers from the International Conference on Historical Lexicography and Lexicology, at the University of Leicester, 2002.(2004) .

Lewis, Robert E. "Aspects of Polysemy in the "Middle English Dictionary": Robert E. Lewis." Historical Dictionaries and Historical Dictionary Research : Papers from the International Conference on Historical Lexicography and Lexicology, at the University of Leicester, 2002.(2004), .