Hanna, G. (2012). Proof and proving in mathematics education: The 19th ICMI study. Springer Publ.
Lua i Stíl Chicago (17ú heag.)Hanna, Gila. Proof and Proving in Mathematics Education: The 19th ICMI Study. Springer Publ, 2012.
Lua MLA (8ú heag.)Hanna, Gila. Proof and Proving in Mathematics Education: The 19th ICMI Study. Springer Publ, 2012.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.