West, D. B. (2001). Introduction to graph theory (2nd ed.). Prentice-Hall.
Tohutoru Kātū Chicago (17th ed.)West, Douglas B. Introduction to Graph Theory. 2nd ed. New Delhi: Prentice-Hall, 2001.
Tohutoro MLA (9th ed.)West, Douglas B. Introduction to Graph Theory. 2nd ed. Prentice-Hall, 2001.
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