Cita APA (7th ed.)

Ingram, H. M., & Mann, D. E. (1980). Why policies succeed or fail. Sage Pub.

Cita Chicago (17th ed.)

Ingram, Helen M., i Dean E. Mann. Why Policies Succeed or Fail. London: Sage Pub, 1980.

Cita MLA (9th ed.)

Ingram, Helen M., i Dean E. Mann. Why Policies Succeed or Fail. Sage Pub, 1980.