@techreport{Cueto2009,
author = {Cueto, S. and Leon, J. and Guerrero, G. and Muñoz, I.},
title= {Characteristics of cognitive development and achievement instruments in round 2 of Young Lives},
year = {2009},
URL = {http://grade.org.pe/download/pubs/psychometricround2younglives.pdf},
publisher = {Oxford Department of International Development (ODID), University of Oxford},
address = {Oxford},
institution = {Young Lives Technical Note},
}