Παραπομπή APA

Karl R. Popper. (1997). The logic of scientific discovery. Routledge.

Παραπομπή Chicago Style

Karl R. Popper. The Logic of Scientific Discovery. London: Routledge, 1997.

Παραπομπή MLA

Karl R. Popper. The Logic of Scientific Discovery. Routledge, 1997.