1. "1. Altun, M. (2000). Matematik öğretimi [Teaching mathematics]. 9 th Edition. İstanbul: Alfa Yayıncılık.
2. 2. Allen, B. & Shiu, C. (1997). Learning mathematics is like... 'view of tutors and students beginning a distance-taught undergraduate course. British Society for Research into Learning Mathematics. Research Report.
3. Metaphorical perceptions of geometrical concepts by secondary school students identified as gifted and identified as non-gifted;Bahadır;International Online Journal of Educational Sciences,2016
4. 4. Baykul, Y. & Aşkar, P. (1987). Matematik öğretimi [Teaching mathematics]. Eskişehir: T.C. Anadolu Üniversitesi Yayınları No: 193.
5. 5. Burns, M. (2000). About teaching mathematics. Second edition. California: Math Solutions Publication.