APA (7th ed.) Citation

Dürr, K. (1951). The propositional logic of Boethius. North-Holland.

Chicago Style (17th ed.) Citation

Dürr, Karl. The Propositional Logic of Boethius. Amsterdam: North-Holland, 1951.

MLA (9th ed.) Citation

Dürr, Karl. The Propositional Logic of Boethius. North-Holland, 1951.

Warning: These citations may not always be 100% accurate.