APA (7th ed.) Citation

Wilson, R. J., & Watkins, J. J. (1990). Graphs an introductory approach: A first course in discrete mathematics. John Wiley.

Chicago Style (17th ed.) Citation

Wilson, Robin J., and John J. Watkins. Graphs an Introductory Approach: A First Course in Discrete Mathematics. Nueva York: John Wiley, 1990.

MLA (9th ed.) Citation

Wilson, Robin J., and John J. Watkins. Graphs an Introductory Approach: A First Course in Discrete Mathematics. John Wiley, 1990.