Peabody, R. L., Nathan, R. P., Calkins, S. E., Fisher, L. 1., & Johnston, R. E. (1976). Cases in American politics. New York: Praeger publisher.

Peabody, Robert L., Richard P. Nathan, Susannah E. Calkins, Louis 1934- Fisher, and Richard E. Johnston. Cases in American Politics. New York: Praeger publisher, 1976.

Peabody, Robert L., et al. Cases in American Politics. New York: Praeger publisher, 1976.