Cita APA (7th ed.)

(2000). International Comparisons of Instructional Activities in Mathematics. U.S. Department of Education.

Cita Chicago (17th ed.)

International Comparisons of Instructional Activities in Mathematics. U.S. Department of Education, 2000.

Cita MLA (9th ed.)

International Comparisons of Instructional Activities in Mathematics. U.S. Department of Education, 2000.

Atenció: Aquestes cites poden no estar 100% correctes.