Books

• Mathematical Proofs: A Transition to Advanced Mathematics Addison Wesley (2002) (with G. Chartrand and A. D. Polimeni)
  
  
• Introduction to Graph Theory McGraw - Hill, New York (2004) (with G. Chartrand )
  
  
• Introduction to Graph Theory Chinese Edition (with Gary Chartrand). Published by China Posts & Telecom Press (2006).
  
  
• Mathematical Proofs: A Transition to Advanced Mathematics Second edition and international edition . Addison Wesley (2007) (with G. Chartrand and A. D. Polimeni)
  
  
• Chromatic Graph Theory (with Gary Chartrand). Published by CRC Press in September 2008.
  
  
• An Introduction to Discrete Mathematics (with Gary Chartrand). To be published by Addison-Wesley.
  

Contribution to a Book

• Distance in Graphs (with Gary Chartrand). Handbook on Graph Theory (ed. by J. Gross and J. Yellen)
  Published by CRC Press, Boca Raton, FL (2004) 873-888.