@techreport{Andreassen2007,
author = {Andreassen, C. and Fletcher, P.},
title= {Early Childhood Longitudinal Study, Birth Cohort (ECLS–B) psychometric report for the 2-year data collection (NCES 2007–084)},
year = {2007},
publisher = {National Center for Education Statistics, Institute of Education Sciences, U.S. Department of Education},
address = {Washington, D.C.},
institution = {84},
}