APA (7th ed.) Citation

Corredor de Porras, M. (2011). Cognitive instruments in mathematical thinking summary. Universidad Pedagógica y Tecnológica de Colombia.

Chicago Style (17th ed.) Citation

Corredor de Porras, Magally. Cognitive Instruments in Mathematical Thinking Summary. Universidad Pedagógica y Tecnológica de Colombia, 2011.

MLA (9th ed.) Citation

Corredor de Porras, Magally. Cognitive Instruments in Mathematical Thinking Summary. Universidad Pedagógica y Tecnológica de Colombia, 2011.

Warning: These citations may not always be 100% accurate.