Cita APA (7th ed.)
Ore, Ø. (1990). Graphs and their uses. Mathematical Association of America.
Cita Chicago (17th ed.)
Ore, Øystein. Graphs and Their Uses. Washington, DC: Mathematical Association of America, 1990.
Cita MLA (9th ed.)
Ore, Øystein. Graphs and Their Uses. Mathematical Association of America, 1990.
Atenció: Aquestes cites poden no estar 100% correctes.