APA-viite (7. p.)

Petrásová, A. (2008). Social protection in the European Union. Statistics in focus: Population and social conditions.

Chicago-viite (17. p.)

Petrásová, Alexandra. "Social Protection in the European Union." Statistics in Focus: Population and Social Conditions 2008.

MLA-viite (8. p.)

Petrásová, Alexandra. "Social Protection in the European Union." Statistics in Focus: Population and Social Conditions, 2008.