Yap, HP. <br/><br/>
Total colourings of graphs 

 - Berlin  Springer-Verlag  1996 
 - vi,131p.  23 cm. 
 - Lecture notes in mathematics .
<br/><br/><label>ISBN: </label>354060717X 
<br/><br/><label>Dewey Class. No.: </label>511.43,  / D, Yap