@book{Callegaro2014,
author = {Callegaro, M. and Baker, R. and Bethlehem, J. and Göritz, A.S. and Krosnick, J.A. and Lavrakas, P.J.},
title= {Online panel research: Data quality perspective},
year = {2014},
doi = {10.1002/9781118763520},
publisher = {Wiley},
}