A research companion to Principles and standards for school mathematics /
edited by Jeremy Kilpatrick, W. Gary Martin, Deborah Schifter.

APA Citation

Schifter, D., Martin, W. Gary., Kilpatrick, J., National Council of Teachers of Mathematics. (2003). A research companion to Principles and standards for school mathematics. Reston, VA: National Council of Teachers of Mathematics.

MLA Citation

Schifter, Deborah, W. Gary Martin, Jeremy Kilpatrick, and National Council of Teachers of Mathematics. A Research Companion to Principles And Standards for School Mathematics. Reston, VA: National Council of Teachers of Mathematics, 2003.

Warning: These citations may not always be complete (especially for serials).