APA (7th ed.) Citation

Heierli, W., Jundt, L., & Kessler, E. (1971). The Civil Defence Facility in the Sonnenberg Tunnel in Lucerne (Switzerland). Civil Defence of the City of Lucerne, Dept. of Shelter Organization.

Chicago Style (17th ed.) Citation

Heierli, Werner, Leonhardt Jundt, and Erwin Kessler. The Civil Defence Facility in the Sonnenberg Tunnel in Lucerne (Switzerland). Luzern: Civil Defence of the City of Lucerne, Dept. of Shelter Organization, 1971.

MLA (9th ed.) Citation

Heierli, Werner, et al. The Civil Defence Facility in the Sonnenberg Tunnel in Lucerne (Switzerland). Civil Defence of the City of Lucerne, Dept. of Shelter Organization, 1971.