@misc{Harris2009,
author = {Harris, K.M.},
title= {The National Longitudinal Study of Adolescent to Adult Health (Add Health), Waves I & II, 1994–1996; Wave III, 2001–2002; Wave IV, 2007−2009},
year = {2009},
address = {Chapel Hill, NC: Carolina Population Center, University of North Carolina at Chapel Hill},
type = {machine-readable data file and documentation},
}