National Research Council (U.S.). Mathematical Sciences Education Board & Bass, H. (1993). Measuring what counts: A policy brief. National Academy Press.

National Research Council (U.S.). Mathematical Sciences Education Board and Hyman Bass. Measuring What Counts: A Policy Brief. Washington, D.C.: National Academy Press, 1993.

National Research Council (U.S.). Mathematical Sciences Education Board and Hyman Bass. Measuring What Counts: A Policy Brief. National Academy Press, 1993.