APA (7th ed.) Citation

Kayser, C., Barthel, R., & Stehlin, V. (2009). Stone and oak, the "Glücksrad" of Basel cathedral.

Chicago Style (17th ed.) Citation

Kayser, Christian, Rainer Barthel, and Vera Stehlin. Stone and Oak, the "Glücksrad" of Basel Cathedral. 2009.

MLA (9th ed.) Citation

Kayser, Christian, et al. Stone and Oak, the "Glücksrad" of Basel Cathedral. 2009.