APA (7th ed.) Citation

Wölfel, K., & Ungerer, T. (2009). Spaziergänge. Vontobel-Stiftung.

Chicago Style (17th ed.) Citation

Wölfel, Kurt, and Tomi Ungerer. Spaziergänge. Zürich: Vontobel-Stiftung, 2009.

MLA (8th ed.) Citation

Wölfel, Kurt, and Tomi Ungerer. Spaziergänge. Vontobel-Stiftung, 2009.

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