Παραπομπή σε μορφή APA (7η εκδ.)

Barr, A., & Packard, T. (2005). Seeking solutions to vulnerability in old age: Preferences, constraints, and alternatives for coverage under Peru’s pension system. CSAE (University of Oxford).

Παραπομπή σε μορφή Chicago (17η εκδ.)

Barr, A., και T. Packard. Seeking Solutions to Vulnerability in Old Age: Preferences, Constraints, and Alternatives for Coverage Under Peru’s Pension System. CSAE (University of Oxford), 2005.

Παραπομπή σε μορφή MLA (9th εκδ.)

Barr, A., και T. Packard. Seeking Solutions to Vulnerability in Old Age: Preferences, Constraints, and Alternatives for Coverage Under Peru’s Pension System. CSAE (University of Oxford), 2005.