APA ציטוט

Popper, K. R. (1968). The logic of scientific discovery. London: Hutchinson.

Trích dẫn kiểu Chicago

Popper, Karl R. The Logic of Scientific Discovery. London: Hutchinson, 1968.

ציטוט MLA

Popper, Karl R. The Logic of Scientific Discovery. London: Hutchinson, 1968.