APA Style
VILLIERS, M, D., HANNA, G. (2012).
Proof and Proving in Mathematics Education: The 19th ICMI Study (1).
Dordrecht:
Springer Dordrecht.
MLA Style
VILLIERS, Michael, De., HANNA, Gila.
"Proof and Proving in Mathematics Education: The 19th ICMI Study".
1
Dordrecht:
Springer Dordrecht,
2012.
Text.