Generalized phrase structure grammar / 
Gerald Gazdar ... et al. 
 - Oxford :  Blackwell,  1985. 
 - 276 p. ;  24 cm. 
<br/><br/>Includes bibliography (p.251-266) and index. 
<br/><br/><label>ISBN: </label>0631132066 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Generative grammar.