O'Hear, A. (1980). Karl Popper. Routledge & Kegan Paul.
Chicago Style (17th ed.) CitationO'Hear, Anthony. Karl Popper. London: Routledge & Kegan Paul, 1980.
MLA (9th ed.) CitationO'Hear, Anthony. Karl Popper. Routledge & Kegan Paul, 1980.
Warning: These citations may not always be 100% accurate.