«Italy – Switzerland Boundary». Florida State University. US. Department of State, 23-10-1961. Arxivat de l'original el 10 juny 2016. [Consulta: 22 agost 2016].
«Italy – Switzerland Boundary». Florida State University. US. Department of State, 23-10-1961. Arxivat de l'original el 10 juny 2016. [Consulta: 22 agost 2016].