Pervai︠a︡ spet︠s︡sluzhba Rossii : taĭnai︠a︡ kant︠s︡eli︠a︡rii︠a︡ Petra I i ee preemniki, 1718-1825 /
Simbirt︠s︡ev, Igorʹ.
Moskva : T︠S︡entrpoligraf,
2006.
Includes bibliographical references.
Secret service