APA (7th ed.) Citation

Pieper, J., & Wald, B. (1997). Werke. Werke in acht Bänden.

Chicago Style (17th ed.) Citation

Pieper, Josef, and Berthold Wald. "Werke." Werke in Acht Bänden 1997.

MLA (9th ed.) Citation

Pieper, Josef, and Berthold Wald. "Werke." Werke in Acht Bänden, 1997.

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