Dürr, K. (1951). The propositional logic of Boethius. Studies in logic and the foundations of mathematics.
芝加哥风格引文Dürr, Karl. "The Propositional Logic of Boethius." Studies in Logic and the Foundations of Mathematics 1951.
MLA引文Dürr, Karl. "The Propositional Logic of Boethius." Studies in Logic and the Foundations of Mathematics, 1951.
警告：这些引文格式不一定是100％准确.
