Styl cytowania APA

Popper, K. R. (1972). The logic of scientific discovery (6th impression revised.). Hutchinson.

Styl cytowania Chicago

Popper, Karl R. The Logic of Scientific Discovery. 6th impression revised. London: Hutchinson, 1972.

Styl cytowania MLA

Popper, Karl R. The Logic of Scientific Discovery. 6th impression revised. Hutchinson, 1972.