Kantikar, Y. Precise Commercial Arithmetic.
Lua i Stíl Chicago (17ú heag.)Kantikar, Y. Precise Commercial Arithmetic.
Lua MLA (9ú heag.)Kantikar, Y. Precise Commercial Arithmetic.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.