APA (7th ed.) Citation

Niemann, P., & Crone, B. (2023). Expo 2000: 20 years later. Kerber.

Chicago Style (17th ed.) Citation

Niemann, Piet, and Benedikt Crone. Expo 2000: 20 Years Later. Bielefeld, Germany: Kerber, 2023.

MLA (9th ed.) Citation

Niemann, Piet, and Benedikt Crone. Expo 2000: 20 Years Later. Kerber, 2023.