de Hartyani, M. (1970) “P. S. Squire: The Third Department. The Establishment and Practices of the Political Police in the Russia of Nicholas I. Cambridge, At the University Press, 1968. viii + 272 s. 8 pi. 2 kort. 70 sh”., Historisk Tidsskrift, 12. Tilgængelig hos: https://tidsskrift.dk/historisktidsskrift/article/view/50998 (Set: 6 december 2025).