APA (7th ed.) Citation

O'Hear, A. (1980). Karl Popper (1. publ.). Routledge & Kegan Paul.

Chicago Style (17th ed.) Citation

O'Hear, Anthony. Karl Popper. 1. publ. London [u.a.]: Routledge & Kegan Paul, 1980.

MLA (9th ed.) Citation

O'Hear, Anthony. Karl Popper. 1. publ. Routledge & Kegan Paul, 1980.