Παραπομπή σε μορφή APA (7η εκδ.)

Holzmann, R., Hinz, R. P., & Gersdorff, H. v. (2005). Old-age income support in the 21st century: An international perspective on pension systems and reform. World Bank.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Holzmann, Robert, Richard P. Hinz, και Hermann von Gersdorff. Old-age Income Support in the 21st Century: An International Perspective on Pension Systems and Reform. Washington, DC: World Bank, 2005.

Παραπομπή σε μορφή MLA (8th εκδ.)

Holzmann, Robert, et al. Old-age Income Support in the 21st Century: An International Perspective on Pension Systems and Reform. World Bank, 2005.