Croft, A., & Davison, R. (1997). Foundation maths: Essential maths for students (2nd ed.). Prentice Hall.
Lua i Stíl Chicago (17ú heag.)Croft, Anthony, agus Robert Davison. Foundation Maths: Essential Maths for Students. 2nd ed. Harlow, England: Prentice Hall, 1997.
Lua MLA (9ú heag.)Croft, Anthony, agus Robert Davison. Foundation Maths: Essential Maths for Students. 2nd ed. Prentice Hall, 1997.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.