Cita APA (7th ed.)

Chartrand, G., & Lesniak Foster, L. (1996). Graphs and digraphs. Chapman&Hall.

Cita Chicago (17th ed.)

Chartrand, Gary, i Linda Lesniak Foster. Graphs and Digraphs. Londres: Chapman&Hall, 1996.

Cita MLA (9th ed.)

Chartrand, Gary, i Linda Lesniak Foster. Graphs and Digraphs. Chapman&Hall, 1996.