SpringerLink (Online service), de Villiers, M., & Hanna, G. (2012). Proof and proving in mathematics education: The 19th ICMI study. Springer Netherlands.
Chicago Style (17th ed.) CitationSpringerLink (Online service), Michael de Villiers, and Gila Hanna. Proof and Proving in Mathematics Education: The 19th ICMI Study. Dordrecht: Springer Netherlands, 2012.
MLA (8th ed.) CitationSpringerLink (Online service), et al. Proof and Proving in Mathematics Education: The 19th ICMI Study. Springer Netherlands, 2012.
Warning: These citations may not always be 100% accurate.