APA (7th ed.) Zitazioa

Arnon, I., & Cottrill, J. (2014). APOS Theory: A framework for research and curriculum development in mathematics education. Springer.

Chicago Style (17th ed.) Zitazioa

Arnon, Ilana, eta Jim Cottrill. APOS Theory: A Framework for Research and Curriculum Development in Mathematics Education. New York, Estados Unidos: Springer, 2014.

MLA (9th ed.) Zitazioa

Arnon, Ilana, eta Jim Cottrill. APOS Theory: A Framework for Research and Curriculum Development in Mathematics Education. Springer, 2014.