APA
National Council of Teachers of Mathematics, . (2000). Principles and Standards for School Mathematics. Oregon: .
Chicago
National Council of Teachers of Mathematics, . 2000. Principles and Standards for School Mathematics. Oregon: .
Harvard
National Council of Teachers of Mathematics, . (2000). Principles and Standards for School Mathematics. Oregon: .
MLA
National Council of Teachers of Mathematics, . Principles and Standards for School Mathematics. Oregon: . 2000.
