Chartrand, G., & Lesniak, L. (1996). Graphs and diagraphs (3rd ed.). Chapman and Hall.
Lua i Stíl Chicago (17ú heag.)Chartrand, Gary, agus Linda Lesniak. Graphs and Diagraphs. 3rd ed. London: Chapman and Hall, 1996.
Lua MLA (9ú heag.)Chartrand, Gary, agus Linda Lesniak. Graphs and Diagraphs. 3rd ed. Chapman and Hall, 1996.
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