https://fr.z-lib.sx/book/19093765/902bcc/Il-morso-della-vipera-Italian-edition.html
https://ps.russian-books.sk/book/27219499/d29630/Il-morso-della-vipera.html
https://hi.openzlib.link/book/5635919/822045/il-morso-della-vipera.html
https://bn.bulgarian-books.sk/book/5657143/1ab2f8/Il-morso-della-vipera.html
https://de.russian-books.sk/book/23485102/64f1c9/Il-morso-della-vipera.html
https://de.bulgarian-books.sk/book/23485087/b173ae/Il-morso-della-vipera.html