Cita APA (7th ed.)

Popper & Karl R. (2002). The Logic of Scientific Discovery (2nd ed.). Routledge.

Cita Chicago (17th ed.)

Popper i Karl R. The Logic of Scientific Discovery. 2nd ed. London / New York: Routledge, 2002.

Cita MLA (9th ed.)

Popper i Karl R. The Logic of Scientific Discovery. 2nd ed. Routledge, 2002.