| 1 | 1-Advanced Mathematical Tkinking, (Ed.) David Tall, Kluwer Academic Publishers. |
| 2 | 2-Teaching and Learning Proof Across The Grades A K16 Perspectives, (Eds.) Despine A. Stylianou, Maria L. Blanton, Eric J. Knuth, Routledge. |
| 3 | 3-Explanation and Proof in Mathematics, Philosophical and Educational Perspectives (Eds.) Gila Hanna, H. Niels Jahnke, Helmut Pulte, Springer. |
| 4 | 4-Matematikçi Gibi Düşünmek, Kevin Houston, (Çev.) Mehmet Terziler, Tahsin Öner, Palme Yayıncılık. |
| 5 | 5-Proof and Knowledge in Mathematics, (Ed.) Michale Detlefsen, Routledge. |