Cita APA (7th ed.)

National Council of teachers of mathematics & Lester, F. K. (2007). Second handbook of research on mathematics teaching and learning: A project of the National Council of Teachers of Mathematics. Information Age Publishing.

Cita Chicago (17th ed.)

National Council of teachers of mathematics i Frank K. Lester. Second Handbook of Research on Mathematics Teaching and Learning: A Project of the National Council of Teachers of Mathematics. Charlotte, NC: Information Age Publishing, 2007.

Cita MLA (9th ed.)

National Council of teachers of mathematics i Frank K. Lester. Second Handbook of Research on Mathematics Teaching and Learning: A Project of the National Council of Teachers of Mathematics. Information Age Publishing, 2007.