United Nations Educational, Scientific and Cultural Organization. (1967). New trends in mathematics teaching. Tendances nouvelles de l'enseignement des mathematiques. Unesco.
Cita Chicago (17th ed.)United Nations Educational, Scientific and Cultural Organization. New Trends in Mathematics Teaching. Tendances Nouvelles De L'enseignement Des Mathematiques. Paris: Unesco, 1967.
Cita MLA (9th ed.)United Nations Educational, Scientific and Cultural Organization. New Trends in Mathematics Teaching. Tendances Nouvelles De L'enseignement Des Mathematiques. Unesco, 1967.
Atenció: Aquestes cites poden no estar 100% correctes.