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.