National Research Council (U.S.). Committee for Improved Measurement of High School Dropout and Completion Rates: Expert Guidance on Next Steps for Research and Policy Workshop, issuing body.
Washington, D.C. : National Academies Press, [2011?]
Barro, Stephen M.
[Washington, D.C.] : Center for Education Statistics, Office of Educational Research and Improvement, U.S. Dept. of Education : For sale by the Supt. of Docs., U.S. G.P.O., 1987.