Sterling, Leon. <br/><br/>
The art of Prolog :  advanced programming techniques / 
Leon Sterling, Ehud Shapiro ; with a foreword by David H.D. Warren. 
 - Second 
 - Cambridge, Mass. :  MIT Press,  c1994. 
 - xxxix, 509 p. :  ill. ;  24 cm. 
 - Logic programming .