"SR 22 Zivilgesetzbuch" (official website) (in German, French, and Italian). Berne, Switzerland. 10 September 1916. Archived from the original on 17 September 2016. Retrieved 17 September 2016.
Schneider, Michael E.; Mathias, Scherer. "Switzerland"(PDF). FIDIC: An Analysis of International Construction Contracts. Archived(PDF) from the original on 24 March 2016. Retrieved 7 April 2018.
"SR 22 Zivilgesetzbuch" (official website) (in German, French, and Italian). Berne, Switzerland. 10 September 1916. Archived from the original on 17 September 2016. Retrieved 17 September 2016.
Schneider, Michael E.; Mathias, Scherer. "Switzerland"(PDF). FIDIC: An Analysis of International Construction Contracts. Archived(PDF) from the original on 24 March 2016. Retrieved 7 April 2018.