Bork, Robert Odell. <br/><br/>
The geometry of creation :  architectural drawing and the dynamics of gothic design / 
Robert Bork. 
 - Farnham, U.K :  Ashgate,  c2011. 
 - xxi, 462 p. :  ill. ;  29 cm. 
<br/><br/> Includes index. 
<br/><br/>Includes bibliographical references. 
<br/><br/><label>ISBN: </label>9780754660620 (hbk.) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Architectural drawing, Medieval.<br/>Architecture, Gothic--Designs and plans.<br/>Geometry in architecture--Europe.