APA Style

Sung, J, C. (). BOOK 2015 0 The Proceedings of The 12Th international Congress On Mathematical Education intellectual and Attitudinal Challenges . Cham: .

MLA Style

Sung, Je, Cho,. "BOOK 2015 0 The Proceedings of The 12Th international Congress On Mathematical Education intellectual and Attitudinal Challenges". Cham: , . Text.