APA (7th ed.) Citation

Heinrich ,Wansing. (1996). Proof theory of modal logic. Kluwer Academic.

Chicago Style (17th ed.) Citation

Heinrich ,Wansing. Proof Theory of Modal Logic. Dordrecht: Kluwer Academic, 1996.

MLA (9th ed.) Citation

Heinrich ,Wansing. Proof Theory of Modal Logic. Kluwer Academic, 1996.

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