APA-referens (7:e uppl.)

Hofferbert, R. I. (1974). The study of public policy. Bobbs-Merrill.

Chicago-referens (17:e uppl.)

Hofferbert, Richard I. The Study of Public Policy. New York: Bobbs-Merrill, 1974.

MLA-referens (9:e uppl.)

Hofferbert, Richard I. The Study of Public Policy. Bobbs-Merrill, 1974.