APA (7th ed.) Citation

Pieper, A., & Thurnherr, U. (1994). Was sollen Philosophen lesen? E. Schmidt.

Chicago Style (17th ed.) Citation

Pieper, Annemarie, and Urs Thurnherr. Was Sollen Philosophen Lesen? Berlin: E. Schmidt, 1994.

MLA (8th ed.) Citation

Pieper, Annemarie, and Urs Thurnherr. Was Sollen Philosophen Lesen? E. Schmidt, 1994.

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