APA (7th ed.) Citation

Heidegger, M., & Heidegger, M. (1996). The principle of reason. Indiana University Press.

Chicago Style (17th ed.) Citation

Heidegger, Martin, and Martin;Lilly Heidegger. The Principle of Reason. Indiana University Press, 1996.

MLA (9th ed.) Citation

Heidegger, Martin, and Martin;Lilly Heidegger. The Principle of Reason. Indiana University Press, 1996.

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