Cita APA (7th ed.)

Chartrand, G., Lesniak Foster, L., & Ping, Z. (2011). Graphs and digraphs (5a. ed.). CRC Press.

Cita Chicago (17th ed.)

Chartrand, Gary, Linda Lesniak Foster, i Zhang Ping. Graphs and Digraphs. 5a. ed. Boca Ratón: CRC Press, 2011.

Cita MLA (9th ed.)

Chartrand, Gary, et al. Graphs and Digraphs. 5a. ed. CRC Press, 2011.