Russkiĭ agent vo Frant︠s︡ii : I︠A︡kov Nikolaevich Tolstoĭ, 1791-1867 /
Cherkasov, Petr Petrovich.
Moskva : KMK. Tovarishchestvo nauchnykh izdanii/KMK. Tovarishchestvo nauchnykh izdanii (Russia/Moskva),
2008.