Não informado. (1977). Journal of Graph Theory. John Wiley & Sons.
Lua i Stíl Chicago (17ú heag.)Não informado. Journal of Graph Theory. New York: John Wiley & Sons, 1977.
Lua MLA (8ú heag.)Não informado. Journal of Graph Theory. John Wiley & Sons, 1977.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.