Παραπομπή APA

Chartrand, G., Lesniak, L., & Zhang, P. (2011). Graphs & digraphs (5th ed.). Chapman and Hall/CRC Press.

Παραπομπή Chicago Style

Chartrand, Gary, Linda Lesniak, και Ping Zhang. Graphs & Digraphs. 5th ed. Boca Raton: Chapman and Hall/CRC Press, 2011.

Παραπομπή MLA

Chartrand, Gary, et al. Graphs & Digraphs. 5th ed. Chapman and Hall/CRC Press, 2011.