APA

Przełęcki M., . (1969). The logic of empirical theories. London: Routledge & Kegan Paul [u.a.].

Chicago

Przełęcki Marian, . 1969. The logic of empirical theories. London: Routledge & Kegan Paul [u.a.].

Harvard

Przełęcki M., . (1969). The logic of empirical theories. London: Routledge & Kegan Paul [u.a.].

MLA

Przełęcki Marian, . The logic of empirical theories. London: Routledge & Kegan Paul [u.a.]. 1969.