Additional readings provide a jumping-off point for course assignments, papers, research, group work, and class discussion.

Groves, R. M., Fowler, F. J., Jr., Couper, M. P., Lepkowski, J. M., Singer, E., & Tourangeau, R. (2004). Survey methodology. Hoboken, NJ: Wiley.

Levy, P. S., & Lemeshow, S. (1999). Sampling of populations: Methods and applications (3rd ed.). New York, NY: Wiley.

Robinson, W. S. (1950). Ecological correlations and the behavior of individuals. American Sociological Review, 15, 351–357.