Παραπομπή σε μορφή APA (7η εκδ.)

SpringerLink (Online service), Shughart, W. F., & Tollison, R. D. (2005). Policy Challenges and Political Responses: Public Choice Perspectives on the Post-9/11 World. Springer US.

Παραπομπή σε μορφή Chicago (17η εκδ.)

SpringerLink (Online service), William F. Shughart, και Robert D. Tollison. Policy Challenges and Political Responses: Public Choice Perspectives on the Post-9/11 World. Boston, MA: Springer US, 2005.

Παραπομπή σε μορφή MLA (8th εκδ.)

SpringerLink (Online service), et al. Policy Challenges and Political Responses: Public Choice Perspectives on the Post-9/11 World. Springer US, 2005.