Peter Blythe; Paul Urban; David M. Martin. (2005). Mathematics HL Options for International Baccalaureate. Haese & Harris Publications.
Lua i Stíl Chicago (17ú heag.)Peter Blythe; Paul Urban; David M. Martin. Mathematics HL Options for International Baccalaureate. Haese & Harris Publications, 2005.
Lua MLA (9ú heag.)Peter Blythe; Paul Urban; David M. Martin. Mathematics HL Options for International Baccalaureate. Haese & Harris Publications, 2005.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.