International Congress for Logic, Methodology, and Philosophy of Science < 1971, Bucharest, Romania>. (1973). Logic, methodology and philosophy of science IV: Proceedings of the Fourth International congress for Logic, Methodology and Philosophy of Science, Bucharest, 1971. North-Holland Pub. Co.
Chicago-Zitierstil (17. Ausg.)International Congress for Logic, Methodology, and Philosophy of Science < 1971, Bucharest, Romania>. Logic, Methodology and Philosophy of Science IV: Proceedings of the Fourth International Congress for Logic, Methodology and Philosophy of Science, Bucharest, 1971. Amsterdam: North-Holland Pub. Co, 1973.
MLA-Zitierstil (9. Ausg.)International Congress for Logic, Methodology, and Philosophy of Science < 1971, Bucharest, Romania>. Logic, Methodology and Philosophy of Science IV: Proceedings of the Fourth International Congress for Logic, Methodology and Philosophy of Science, Bucharest, 1971. North-Holland Pub. Co, 1973.