Levelt, W.J.M.. <br/><br/>
Formal Grammars in Linguistics and Psycholinguistics /  

 - 1st ed /  
 - Hague :   Mouton & Co. B.V. Publishers. 
 - p.206 :  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Psycholinguistic Applications
<br/><br/><label>Dewey Class. No.: </label>P:(S)  / L4.3