Ball, M. (1990). Network models. Elesevier Science Publishers.
Lua i Stíl Chicago (17ú heag.)Ball, M.O. Network Models. Amsterdam: Elesevier Science Publishers, 1990.
Lua MLA (9ú heag.)Ball, M.O. Network Models. Elesevier Science Publishers, 1990.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.