Wilson, R. J., & Watkins, J. J. (1990). Graphs: : an introductory approach: a first course in discrete mathematics. New York: John Wiley & Sons.
Παραπομπή Chicago StyleWilson, Robin J., and John J. Watkins. Graphs: : An Introductory Approach: A First Course in Discrete Mathematics. New York: John Wiley & Sons, 1990.
Παραπομπή MLAWilson, Robin J., and John J. Watkins. Graphs: : An Introductory Approach: A First Course in Discrete Mathematics. New York: John Wiley & Sons, 1990.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.