Παραπομπή σε μορφή APA (7η εκδ.)

SpringerLink (Online service), Crew, M. A., & Kleindorfer, P. R. (2006). Progress toward Liberalization of the Postal and Delivery Sector. Springer US.

Παραπομπή σε μορφή Chicago (17η εκδ.)

SpringerLink (Online service), Michael A. Crew, και Paul R. Kleindorfer. Progress Toward Liberalization of the Postal and Delivery Sector. Boston, MA: Springer US, 2006.

Παραπομπή σε μορφή MLA (8th εκδ.)

SpringerLink (Online service), et al. Progress Toward Liberalization of the Postal and Delivery Sector. Springer US, 2006.