Cita APA

Niss, M. (2018). Learning difficulties in mathematics. What are their nature and origin, and what can we do to counteract them? Universidad de Costa Rica.

Citación estilo Chicago

Niss, Mogens. Learning Difficulties in Mathematics. What Are Their Nature and Origin, and What Can We Do to Counteract Them? Universidad de Costa Rica, 2018.

Cita MLA

Niss, Mogens. Learning Difficulties in Mathematics. What Are Their Nature and Origin, and What Can We Do to Counteract Them? Universidad de Costa Rica, 2018.