Lua APA (7ú heag.)
Helmberg, G. (2007). Getting acquainted with fractals. Walter de Gruyter.
Lua i Stíl Chicago (17ú heag.)
Helmberg, Gilbert. Getting Acquainted with Fractals. Berlin ; New York: Walter de Gruyter, 2007.
Lua MLA (9ú heag.)
Helmberg, Gilbert. Getting Acquainted with Fractals. Walter de Gruyter, 2007.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.