APA aipamena

O'Hear, A. (1980). Karl Popper. Routledge & Kegan Paul.

Chicago Style aipamena

O'Hear, Anthony. Karl Popper. London: Routledge & Kegan Paul, 1980.

MLA aipamena

O'Hear, Anthony. Karl Popper. Routledge & Kegan Paul, 1980.