Ore, Ø. (1990). Graphs and their uses. Mathematical Association of America.
Lua i Stíl Chicago (17ú heag.)Ore, Øystein. Graphs and Their Uses. Washington, DC: Mathematical Association of America, 1990.
Lua MLA (9ú heag.)Ore, Øystein. Graphs and Their Uses. Mathematical Association of America, 1990.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.