APA aipamena

Karl R Popper. (1997). The poverty of Historicism. Routledge.

Chicago Style aipamena

Karl R Popper. The Poverty of Historicism. London: Routledge, 1997.

MLA aipamena

Karl R Popper. The Poverty of Historicism. Routledge, 1997.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.