Guide-book of Liguria / [text by Guido Coppini, Luciano Garibaldi, Paolo Garimberti ; edited by Ernesto Caballo ; 2 geoplastigraphic maps by Hans Oberbacher]. – Sesto San Giovanni : Vaccari, stampa 1969. – 254 p. : ill. ; 17 cm + 1 c. geogr. ; 17 cm.