(1999). 数学小灵通. 数学小灵通杂志社.
Lua i Stíl Chicago (17ú heag.)数学小灵通. 数学小灵通杂志社, 1999.
Lua MLA (8ú heag.)数学小灵通. 数学小灵通杂志社, 1999.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.
(1999). 数学小灵通. 数学小灵通杂志社.
Lua i Stíl Chicago (17ú heag.)数学小灵通. 数学小灵通杂志社, 1999.
Lua MLA (8ú heag.)数学小灵通. 数学小灵通杂志社, 1999.