Não informado. (1993). Complexity. John Wiley & Sons.
Lua i Stíl Chicago (17ú heag.)Não informado. Complexity. New York: John Wiley & Sons, 1993.
Lua MLA (8ú heag.)Não informado. Complexity. John Wiley & Sons, 1993.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.