Palmer, F.R. <br/><br/>
Modality and English models. 

 - 2nd edn. 
 - London  Langman  1990 
 - ix,220p. 
 - Longman Linguistics Library. .
<br/><br/><label>Subjects--Topical Terms: </label><br/>P:26
<br/><br/><label>Dewey Class. No.: </label>P:26  / Mo