APA (7th ed.) Citation

Kleinknecht, A., Baumgärtel, F., Bieder, W., Peyer, E. d., Kittel, G., & Sjöberg, E. (1971). Esprit. Labor et Fides.

Chicago Style (17th ed.) Citation

Kleinknecht, Alfred, Friedrich Baumgärtel, Werner Bieder, Etienne de Peyer, Gerhard Kittel, and E. Sjöberg. Esprit. Genève: Labor et Fides, 1971.

MLA (9th ed.) Citation

Kleinknecht, Alfred, et al. Esprit. Labor et Fides, 1971.