Cytowanie według stylu APA (wyd. 7)

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).

Cytowanie według stylu Chicago (wyd. 17)

Barr, A., i 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.

Cytowanie według stylu MLA (wyd. 9)

Barr, A., i 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.