Nedopisannyĭ dnevnik obuchenii︠a︡, budushchego imperatora Pavla I, kotoryĭ vel ego uchitelʹ S.A. Poroshin.
Poroshin, Semen Andreevich,1741-1769.
Moskva : Fond imeni I.D. Sytina,
1996.
Paul I, Emperor of Russia, 1754-1801
Education of princes