Hillygus, D. S., Jackson, N., & Young, M. (2014). “Professional Respondents in Online Survey Panels,” Online Panel Research - A Data Quality Perspective. In R. B. M Callegaro, P. Lavrakas, J. Krosnick, J. Bethlehem, & A. Gritz (Eds.), Online Panel Research - A Data Quality Perspective. Wiley.

Hillygus, D. S., N. Jackson, and M. Young. ““Professional Respondents in Online Survey Panels,” Online Panel Research - A Data Quality Perspective.” In Online Panel Research - A Data Quality Perspective, edited by R Baker M Callegaro, P. Lavrakas, J. Krosnick, J. Bethlehem, and A. Gritz. Wiley, 2014.

Hillygus DS, Jackson N, Young M. “Professional Respondents in Online Survey Panels,” Online Panel Research - A Data Quality Perspective. In: M Callegaro RB, Lavrakas P, Krosnick J, Bethlehem J, Gritz A, editors. Online Panel Research - A Data Quality Perspective. Wiley; 2014.

Hillygus, D. S., et al. ““Professional Respondents in Online Survey Panels,” Online Panel Research - A Data Quality Perspective.” Online Panel Research - A Data Quality Perspective, edited by R Baker M Callegaro et al., Wiley, 2014.

Hillygus DS, Jackson N, Young M. “Professional Respondents in Online Survey Panels,” Online Panel Research - A Data Quality Perspective. In: M Callegaro RB, Lavrakas P, Krosnick J, Bethlehem J, Gritz A, editors. Online Panel Research - A Data Quality Perspective. Wiley; 2014.