APA (7th ed.) Citation

Gschwend, M., Meili, D., & Hunziker, R. (1993). Ballenberg. AT Verlag.

Chicago Style (17th ed.) Citation

Gschwend, Max, David Meili, and Rudolf Hunziker. Ballenberg. Aarau/Schweiz: AT Verlag, 1993.

MLA (9th ed.) Citation

Gschwend, Max, et al. Ballenberg. AT Verlag, 1993.